I thought I'd start out the new year with a little old news and and old, old rant. Just let me just get on my flameproof suit before I get going. Please read carefully before you turn on the flamethrower. A little background, first. I recently decided to give up my ties to organized religion without completely eschewing some sort of spirituality (though that's not the current topic), and one of the reasons I finally got fed up was the rampant misogyny and exclusivity practiced by most organized religion. In short, I got tired of being told that because my 23rd chromosome pair happened to by XX and not XY and my genitalia internal rather than external, that I was somehow unfit for duty.
It's not just religion, obviously, that's misogynistic, but it's always been interesting to me that this is one of the characteristics that religion and science—often so antithetical to each other—share, and for so many of the same reasons. Of course, this is because both spring out of the culture around them and are carried out and structured by the people in that culture who have the power to make the structure. Need I say that for thousands of this years, this has been, almost exclusively, men? So if men decide women are too inferior in whatever way to have a personal relationship with God either through study of the texts or through participating in the mysteries (exemplified by Milton's "He for God only, she for God in him.") little wonder scientists should (even unconsciously) think the same way about what many see as a new, improved replacement system.
The reasoning, though, is strikingly similar and you'd think male scientists would pay more attention to that. Of course, it's to their advantage not to. It's convenient for them to claim that women's brains are not made for math (an old saw rapidly being dulled) or that we don't do science the way it "should be done," i.e., the way men do it. Probably true, but not necessarily bad or wrong. Just different. I'm not talking about the scientific method here, but about the culture of science and the way men and women approach problem-solving. This is a factor not just in the scientific establishment, but in medicine and business as well.
And of course, there are social and cultural pressures on women now that men don't have to deal with, as the Gender Equity report by the American Physical Society (pdf) I recently helped edit shows quite clearly. This is a factor just as often conveniently forgotten in the interpretations of key scriptures that seem to ban women from positions of authority in the church, while just as conveniently ignoring the scriptures that show them in those positions.
There are also some striking similarities between the two areas in their jealous guarding of knowledge. In both cases, men are are frequently the gatekeepers of the more esoteric aspects of knowledge (see, physicists), intentionally or unintentionally. Personally, I think this is partly because guys like secret societies and all that. They're forever making exclusionary clubs, from the Royal Society to the Benevolent and Protective Order of the Elks. But religion and science are public endeavors, affecting all of us. (Just look at the Evangelical Right's influence on elections in the U.S., if you don't believe me.) Faith that asks no questions is merely blind, stupid obedience; science that allows no free sharing of knowledge is not just bad science, but dangerously blind itself. In both cases the idea that "it's too complicated for you to understand" is used to keep the general public from asking uncomfortable questions: "Why is Junia, a woman, called an apostle?" or, "What are we going to do with the waste generated by nuclear power?" Ultimately, both science and religion are closely bound up in the culture, politics, and social mores of the society around them and reflect those values. Claiming that either of them is neutral or value-free is delusional.
All this is by way of saying that Richard Dawkins' selection of writers for the new Oxford Book of Modern Science Writing is damned odd, if not downright insulting. For one thing, there's nary a mere science writer among them; they're almost all scientists, even Rachel Carson, who started her career as a biologist. This is one example of the "father knows best" attitude so many scientists have toward the public: only scientists can truly communicate the beauty and wonder and complexity of science to the rest of you ninnies. This is far from the truth. It is, in fact, usually a hell of a lot easier to teach good writers about science than it is to teach most scientists to write well, particularly for the public. Most of them have a tendency to include too many advanced details that chase people away, rather than broad, interesting ideas that draw them in. My fellow Cocktail Party Physics blogger Jen waxes eloquent about this frequently in our conversations and here on the blog. The advanced details are important, but you don't start out with those for people with no or little background in the subject, and getting the concepts if you're not a scientist is far more important than understanding the technical details right away. Scientists often have a bad case of "can't see the forest for the trees" when it comes to writing for the public, particularly in their own subject.
And, of course, there are too few women, three, to be precise: biologist Rachel Carson, Helena Cronin, a philosopher who works in sex selection (and who happens to think there are more smart men than smart women—to be fair, she also thinks there are more dumb men than dumb women); and Barbara Gamow, not a scientist, but wife of physicist George Gamow, who is included because of the poem she wrote in response to one of George's lectures. How cute. I say this not to denigrate Barbara Gamow, who was, like many women married to male scientists, extremely supportive of her husband's work and no doubt a sounding board for it, but to illustrate the attitude prevalent about women's role in science (which oddly reflects their view of women's place in art, too): strictly supportive; observer not participator; muse not partner.
Rachel Carson got in, I suspect, because she's hard to ignore; she was so prolific (and a fellow alumna of my alma mater!) and so pivotal in the early days of the ecology movement. But where's biologist Lynn Margulies, who, with James Lovelock, developed the Gaia theory? She's a wonderful writer. Where is primatologist Dian Fossey? Hello? Gorillas in the Mist anyone? Child psychologist Anna Freud? Primatologist/ethologist/anthropologist Jane Goodall, who, like Fossey, wrote extensively for the public? For that matter, where's Margaret Mead? I see physician Lewis Thomas on the list (one of my favorite writers, though he wrote as much about life as about science) but not doctors Perri Klass or Michelle Harrison. Where's oceanographer Sylvia Earle? Or forensic anthropologist Emily Craig? And those are just the ones I can think of off the top of my head.
And we haven't even gotten to the non-scientist, women science writers: Natalie Angier, Dava Sobel, Heather Pringle,or Mary Roach, to name a few, not to mention my eminent and articulate Cocktail Party Physics co-bloggers.
Hawkins' selection is pretty heavy on evolution (no surprise, given that he's an evolutionary biologist), genetics (again, no surprise), physics, neuroscience, and biological systems. There's not much chemistry, straight-up biology, medicine, and no ocean science or any of the so-called "soft" sciences like sociology or anthropology. If what he was aiming for was a balanced picture of the wonders of modern science, this book is hardly that, but it's not even a balanced picture of the best science writing. Like the hard sciences, it's very male-dominated (and white males at that). Enough with Peter Medawar already. He's not that brilliant. He's taking up space with his multiple selections that could easily have been given to a woman or two, scientist or not.
Dawkins could have done much for women scientists everywhere by recognizing their work in this volume. Instead, he just dragged out a lot of the old war horses: Eiseley, Watson & Crick, Gould, Thomas, Hoyle, Haldane, Snow. That's fine to a point in an anthology like this. One does need to include the classics and the big guns like Hawking and Einstein. But if you're going to include the likes of Steven Pinker, Oliver Sacks, Brian Greene, Lee Smolin and Kenneth Ford (Full disclosure: I used to work for him), all fine choices in their own right, then you need to include some contemporary women scientists or science writers too, dammit. If we want science to matter to everyone, we have to include everyone.
Why make a fuss over this? Because this is how women (and minorities) are systematically pushed out of history and out of the present consciousness, in exactly the same way we were pushed out of recognition of a place in the early church: simply by excluding us first from memory and then from the party itself. That's all it takes. Just ignore us. But don't expect us to like it. Or to keep quiet about it.
Member of the choir here. Try admitting to being a nurse and writing about health policy and programs. I must have found the last true outpost of the intertubes because no one comments. Not ever.
Inclusion? No. Ostracism. Yes.
Worse is that women (among them many nurses) are just as contemptuous of the field and it's rightful place at the table as men. It's seen as a bastard child of medicine, instead of as a science in its own right (which is how it's licensed and practiced, albeit with a gazillion problems and restrictions).
Do you find that there is proportional representation in commercial science reportage of qualified women reporters? What about overall (everyone who reports on science, regardless of competency or qualification)?
Posted by: Annie | January 02, 2009 at 08:23 PM
Lack of recognition was one of the problems cited in the Gender Equity report. One of their recommendations was that dept. chairs make sure to mention women's research and nominate it equally for prizes alongside men's research, so yes, I think in physics that proportional representation is a problem. Any of my co-bloggers want to speak to the science reportage question? You're all much more immersed in it than I am.
Several nurses in my circle of friends and family say the same things you do about nursing. I wonder if that will change as more men enter the field? Traditionally, the minute men begin to enter a female dominated field, it gains in prestige. ("It must be cool and worthwhile! Men are doing it!")
Posted by: Lee Kottner | January 02, 2009 at 08:54 PM
Did someone just post something?
Posted by: BDG | January 02, 2009 at 09:31 PM
Rock on.
Posted by: Theo | January 02, 2009 at 10:36 PM
The only thing I would add is that once women have been excluded, it is justification for further exclusion: "Well, if women were really capable, why haven't more of them done something important?!"
Posted by: Cherish | January 03, 2009 at 12:11 AM
Men too ...
hate men's clubs, worry about nuclear wastes, struggle against unjust work recognition ...
One should go beyond the mere gender stereotyped argument and create a new social group of those who hate clubs, worry about nuclear wastes, reject supernatural and mystical elements, ... and become some kind of "social bright" (see http://dorigo.wordpress.com/2009/01/02/i-am-a-bright/) namely a "Bright" concerned with social issues like why the rich get richer and the poor poorer... A whole new programme... is'nt it :-))
BTW:
Women too ...
love women's clubs, do not care about nuclear waste .....
Posted by: Dyonis | January 03, 2009 at 11:05 AM
Yeah, yeah, "men too." They're the privileged default though, and women the exception. Men worry about getting enough work recognition; women worry about getting any at all. This is not a "stereotyped gender issue," it's an actual problem. Read the APS gender equity report before you talk to me about stereotypes.
And you miss the point of the post: it's not about nuclear waste, hating clubs or rejecting supernatural and mystical elements. It's about equal opportunity and representation for women and minorities in not just science, but the world at large. This is only a small example of how it happens everywhere. Being a Bright as Dawkins is doesn't, apparently, guarantee you'll be more aware of discrimination against women.
Posted by: Lee Kottner | January 03, 2009 at 11:25 AM
I like to read on this blog intellectual posts such as the recent post on 'A gift that keeps giving' that deal with science based on facts. Leave the sexist comments, personal opinions, things that bring division between men & women, put-down on religion etc, to the Huffington type of blogs. Enough is enough!! There is enough hate in the world without adding to it.
Posted by: PLO | January 03, 2009 at 02:05 PM
i concur with the author. As a religious Jew, many people[who are ignorant of *FACT*] often ridicule me for being sexist, obstinate, and fault me for keeping my wife home, pregnant, and in the kitchen. That couldn't be farther from the truth. My wife accomplishes more than i do in terms of our religious growth, even though i grew up with it, and she only returned to the faith before we married. i have a big problem with even many rabbis who try to put women in a different place. In Judaism, women are put on a pedestal, because they are more connected on a spiritual level. Because they are closer to God, and have the ability to create life, women are accorded more respect just for that. i applaud my wife for having prepared a talk for many of her friends on the topic of potential, and what people can achieve. i wish i could do the things she can. i understand that we come to Judaism differently, and do things differently, but in the end, we are a couple, and committed together.
i feel that the flagrant discrimination is part of human(read: male) nature. While there are a few men, i'm sure, who aren't that way, and some women who would do the same, it's unhealthy and antithetical to growth of any kind, whatever the field. i'm actually quite fond of one of my friends, a gearhead herself(sort of). She's a nuclear physicist, and deals with "noise", either studying it, designing something to make less of it... something like that. i know i would never be able to do that. i couldn't see anyone taking advantage of her, because she's smarter than her coworkers(she works for the government).
It's a shame that this happens. Maybe men will wake up one day soon and realize that women's ability to work can complement men's work.
Posted by: Ron | January 03, 2009 at 07:40 PM
"Dawkins" seems to transmute into "Hawkins" at one point - but that's probably just some quantum gravity effect due to the high emotional energies involved...
As a white western male, enjoying all the trappings of privilege and power that that brings with it, I wanted to agree with your article, but I have to say that I lost the thread, as it seemed to go off in many different directions. (Also the mental image of your internal genitalia was not welcome while I was eating, although the fairer sex has a definite advantage in that regard, as it is amazing how many day-to-day collision hazards occur in the male groin area...)
I had heard of the finding that there are more clever men than women in the world. That was many years ago (60s? - I can't find a link just now) but this is looking (I guess) at the statistical spread of IQ among populations. Women were found to be more tightly distributed around the mean than men. So, more stupid men exist than stupid women(no surprise there) but the average was found to be the same, if I recall. (As for the significance of IQ as a measure of intelligence, well that's another story...)
Of course I can only speak for myself, but an interest in maths and physics started very young so I kept taking these courses. However, it was clear in those early school days that girls were dropping out of such courses as soon as they could (much to my regret...). Now, I don't think that can be blamed on institutional misogyny (at least one A-level physics teacher at my school was a women, and both my PhD supervisor and the head of department were also women) but of course, individual samples count for nothing statistically - I could even mention that the UK's first female PM was trained as a chemist (but I'm not too proud of this fact for other reasons...)
So, perhaps the bit issue: why do girls drop out of science at an early age - and how to stop it happening?
Posted by: James | January 04, 2009 at 01:19 PM
in this spirit - what about anglophone unjustified domination? apparently it wasn't enough that everyone either way has to speak and read in the current lingua franca, but they apparently even had to be native speakers as well to be considered, judging by the selection. this surely has no reasonable justification given contemporary polyglottism in science and, if for some reason still insufficient, standards of translation? preferences of specialization area set aside, another obvious name on the list ought to be rita levi montalcini, not just still a brilliant mind at 99 but also a great testimony of a woman's life in science.
Posted by: gustav | January 05, 2009 at 01:21 PM
It is, in fact, usually a hell of a lot easier to teach good writers about science than it is to teach most scientists to write well,
I think this is absolutely the opposite of the truth. Many scientists are at least competent writers - theses and papers don't write themselves - and learning the skills of effective science writing for a broad audience is just a matter of practice. When they've mastered that, they are then able to communicate complex and difficult ideas effectively, not least because the first stage in being able to do that is understanding the ideas in the first place. Examples abound: Dawkins, Feynman, Hofstadter, Dennett, Weinberg, Gould...
On the other hand, the idea that you can take a capable writer and pump him or her full of a load of science which he or she then turns into great science writing seems to me terribly naive. Certainly there are science writers who follow this path, but I invariably find their work shallow, trite and devoid of the kinds of genuine, startling insights that real scientists can bring to their writing. They are generally in the classic position of the Third Artist: the First Artist paints from life, the Second Artist copies the First Artist, and the Third Artist copies the Second Artist. By which point, all the complexity and nuance that made the First Artist's work invaluable, and the Second Artist's at least worthwhile, has been washed away.
Actually, I think the key point is made in your own words. It may be relatively easy to teach good writers about science, but that's not the same thing as teaching them science.
Posted by: Iain Coleman | January 05, 2009 at 06:33 PM
-Iain, I couldn't (obvously) disagree with you more. The scientists you cite are undoubtedly fine writers, but they're the exception rather than the rule. Communicating science to the public does not require a Ph.D. There is nothing comparable about writing either a dissertation or a scientific paper and writing for the public. In the latter you have problems of voice as well as content, which scientists don't as a rule have to grapple with. Dissertations and scientific papers invariably employ the passive voice, which is damned hard to break out of, if the writer is even aware of it. Fine writing, contrary to most people's concept of it, is actually an art, not just a skill. Anyone can be taught to write competently, but writing well--with verve and excitement and a real personal voice--is a genuine talent. Nor is it just a matter of "pumping writers full" of scientific knowledge. The best science writers generally have pretty solid backgrounds in science themselves, whether they have degrees in it or not. They couldn't write a dissertation or sometimes even do the math, but neither can the people they're writing for. What they can do is communicate the excitement you say you're missing. And when that excitement is missing, it's not because the writer doesn't know the science, is because they're writing outside their expertise, i.e., not a science writer. I'm not saying no scientist can write well about their field, but the ones who can hold my interest without losing me in minutiae and formulae are few and far between. Even Feynman gets to be a bit much after a while. And Gould was often very stilted, despite his folksy voice.
-Gustav, I couldn't agree more. I'd love to have a collection of science writing with a more international flavor. I'd love to have one that was just more diverse period.
-PLO, this post isn't about hate it's about exclusion. So if I point out sexism in a system, whether science or religion, I'm automatically sexist and anti-religion? How does that work? The divisions are already there, whether I point them out or not. Ignoring them doesn't make them disappear. Critiquing a system can actually be useful. And it has a place in writing about any system, science or religion or politics.
-James, I think you're right about the IQ thing averaging out, and you're right to point out that it's a bogus measure of intelligence anyway (Gould wrote a couple of great essays about that). As for why girls drop out of math and science, it seems to be largely down to peer pressure and the (now) very subtle expectation that girls aren't good in either discipline. It's still not cool to be smart if you're a girl. Math and science are often seen us unacceptably nerdy.
Posted by: Lee Kottner | January 05, 2009 at 09:49 PM
I have always wanted to know why the writers of the Gender Equity report chose the pull quote that says, "if you publicly chastise those who make demeaning or snide comments"... "the rewards are great."'
This is terrible advice. First, it assumes that a person in power is witnessing the gender-based harassment; that rarely happens. Second, it assumes that the person in power has enough information to determine fault without investigating, and even though I am not a fan of harassers, that would not be fair to an alleged harasser. Lastly, it escalates harassment into a public scene and potential violence, aside from disrupting work. It is better to handle these things in an HR department, or at least remove the harasser and take him or her behind closed doors, and deal with it in a fair, non-emotional manner for both victim and alleged harasser. It seems no one talked to a lawyer before putting that quote so large and in front.
Can you advise me on why this choice of solution and how that fits in with the idea of gender equity?
Posted by: sister of physics brothers | January 05, 2009 at 11:23 PM
"Sister," I think the context that pull quote was taken from was in discussing zero tolerance policies for sexist remarks. The report urges heads of departments to make it clear that demeaning remarks won't be tolerated during, for instance, faculty meetings. It's not a suggestion to act on hearsay, but to act in the moment, when it happens, as anecdotal evidence indicates it often does. It's much more harmful to let remarks slide when they're made (which signals tacit approval) than to quash them immediately. And those remarks are actually far less rare than you might think, according to surveys.
Unfortunately, even when sexual harassment complaints are filed, they're often ignored or not acted upon when they are brought to HR departments. But the pull quote is talking about "caught in the act" situations, not where it's he said/she said. Those situations are always much harder to deal with for everyone, especially where it's ongoing.
Posted by: Lee Kottner | January 05, 2009 at 11:37 PM
Lee:
Thank you for answering.
In fact, complaints about, or brought to, leaders are ignored more often. It is often the leaders who are the harassers. So I guess we have no real answer. HR is under the leadership of someone and that leader should make sure HR is working.
As a victim in just the very gender-based harassment situation, in a physics environment, public "anything" just brings retaliation onto the victim more than it stops the harasser. It is emotional, spur of the moment responses that will create a disaster in the workplace for everyone, victim, harasser, onlookers, etc. You don't change people by acting like a "parent" in front of others, when the speaker thinks he or she is fine to make the comment. As a victim, I can tell you the tension created by this solution is not helpful. It further victimizes the victim by making "her" issue bring unwarranted attention to her that the harasser gets angry about. The leader is not around enough to protect the victim and then it is the victim who is branded with "causing public turmoil."
Posted by: sister of physics brothers | January 06, 2009 at 09:31 AM
Lee,
How often do you find people from a science background patronising the world with pop accounts of the great works of Sheaekspere or the symphonoies of Beethoven?
Posted by: James | January 06, 2009 at 11:46 PM
James,
If, by "pop accounts" you mean "dabbling" outside their degreed specialty for the public:
-Isaac Asimov, Ph.D. chemist, Asimov's Guide to Shakespeare (and the Bible!)
-Sir Jonathan Miller, neurologist & theater and opera director
-Sir Arthur C. Clarke and about every third writer of hard science fiction at Clarion
-Lewis Thomas, MD, Late Night Thoughts on Listening to Mahler's Ninth Symphony
-Alan Lightman's excursions into fiction
Those are just the ones I can think of off the top of my head.
I think it's the word "patronising" that's the problem.
Actually, the idea that "of course, scientists are the best writers to describe science" is of that same "patronising" mindset. Fiction and writing in general are part of the humanities, not the scientific disciplines. You don't go to the physics department for composition classes, do you?
Posted by: Lee Kottner | January 07, 2009 at 12:13 AM
I sat next to the single most important scientist of the 20th century IMHO at an ACS symposia on the impact of mass spectrometer in chemistry. The scientist was Carl Djerassi and his contribution was the creation of the oral contraceptive pill. The pill has allowed women to enter and stay in the work force for as long as they want to or feel economically required to do so. And in so doing, women have been changing the workplace dynamic in a very positive way and contributing to increased economic viability in so many industries around the world. In my field of biotechnology, women have a very high percentage of staff positions and have been my manager, mentor and ocassionally a more jumior staff contributor to many challenging research projects. Biotechnology and drug development activities would immediately collapse without your continued contributions. I cannot speak to the issues of glass ceilings as I do not have experience with senior management in large pharma but I can say unequivocally that there is gender equality as far as professional roles go at the bench and middle manageament in biotechnology.
Posted by: David | January 07, 2009 at 06:22 PM
I just finished writing an article for my college alumni magazine about women in science. For those of you who are interested in looking up information about this question, and don't mind reading through committee reports, there is an excellent study by the National Academies of Science, called "Beyond Bias and Barriers," that you can read online or download for a very reasonable price at www.nap.edu/catalog/11741.html. Also, for physics types, there is some interesting data (slightly older) on the retention of women at www.aip.org/statistics.
I'd like to mention one thing from the AIP website that I have not seen mentioned or discussed *anywhere* on the Web. They have a graph of the percentage of bachelor's degrees in six different sciences that were earned by women during each year from 1966 to 2004. In every subject but one, there is a slow and steady increase of women. In biological sciences, the percentage in 2004 was *over 60%*! Chemistry was over 50%, and mathematics was around 45%. At the bachelor's level, these fields are already at or near gender equality. Physics and engineering are far from equality, with about 20% of the degrees going to women, but at least they are making steady progress.
The one big exception, which sticks out like a sore thumb, is *computer science*. The percentage of women earning bachelor's degrees in computer science peaked around 1984, at around 35 percent, and it has gone downhill ever since.
What's the deal? Why has CS alone, of all the sciences, become *more* male-dominated over the last two decades? My personal hypothesis, based on observation of my nephews, is that boys these days grow up absolutely immersed in the world of computer games, and therefore computer science is their first and easiest choice for a major. For girls, that is probably less true.
Anyway, I just thought I'd throw this out for discussion.
Posted by: Dana | January 11, 2009 at 12:21 PM
The fact is that male writers have a sense of humor, and women writers
are usually earnest drudges--see Christopher Hitchens:
http://www.vanityfair.com/culture/features/2007/01/hitchens200701
Posted by: Gordon | January 15, 2009 at 12:19 AM
Dana, thanks for the information. I don't know of similar studies in computer science, but this may explain the problem: http://xkcd.com/322/
What to do about it? That's another question.
Gordon: R U serious?
Posted by: Lee Kottner | January 15, 2009 at 01:02 AM
Lee: "Gordon: R U serious?" Yup. Sort of...
There are very good women science writers (Sylvia Nasar, Gina Kolata, Jennifer :)), but
I do find most women to be humor-impaired compared to men (there are always exceptions).
Christopher Hitchens is being abit of a troll, but his column is headlined as "Provocations",
and the subtext is spot on.
Posted by: Gordon | January 17, 2009 at 11:13 AM
Gordon: Don't start me on Christopher Hitchens; that's a side issue. But saying "I do find most women to be humor-impaired" is a sweeping generalization. You don't even know most women. I suspect that many women you do know don't find the same things funny that you do (hmmm, jokes about what women are like, maybe?), but that is not the same as lacking in humor. This is another example of using the male paradigm as the standard default. "You don't find our humor funny, therefore you have no humor of your own, because our humor is the only legitimate template." I suspect many (not all) women would find your type of humor . . . insulting? Juvenile? Misogynist? I dunno because I don't sense anything funny in your writing here. Women's humor is the humor of the oppressed: sharper, sarcastic, not meant for your ears. Of course you don't "get it."
I see your Christopher Hitchens (shudder) and raise you a Ms. article:
http://www.msmagazine.com/summer2004/whatsfunny.asp
Posted by: Lee Kottner | January 17, 2009 at 12:14 PM
My writing here wasn't supposed to be funny--that sort of proves my point. And talk about
sweeping generalisations---"insulting, juvenile, misogynist.." Other than Tina Fey, I don't
find any women equivalents of Robin Williams, Bill Maher, Dana Carvey, Jim Carrey, John Cleese, Ricky Gervais, etc. etc.
And I am Canadian, so I don't find your American "in your face" humor very funny. British humor
is "sharper, sarcastic, not meant for your ears" but "of course you don't "get it"". Hmmm, name
a British female "comedian". It seems that I have stumbled into a feminist warren.
Posted by: Gordon | January 17, 2009 at 05:38 PM