Kara > Books: science‎ (104)

Arguing that a specific cognitive skill is associated with a specific stage of hominin evolution of course does not mean that this skill developed only at that time.

Previously, it was thought that Homo erectus had descended from Homo habilis, but recent archeological research suggests that Homo habilis and Homo erectus lived side by side in what is now northern Kenya “for almost half a million years,” making this evolutionary sequence less likely.

Throughout all this I never felt that I’d be a failure in life if I didn’t get to space. Since the odds of becoming an astronaut were nonexistent, I knew it would be pretty silly to hang my sense of self-worth on it. My attitude was more, “It’s probably not going to happen, but I should do things that keep me moving in the right direction, just in case—and I should be sure those things interest me, so that whatever happens, I’m happy.”

The debrief is a cultural staple at NASA, which makes this place a nightmare for people who aren’t fond of meetings. During a sim, the flight director or lead astronaut makes notes on major events, and afterward, kicks off the debrief by reviewing the highlights: what went well, what new things were learned, what was already known but needs to be re-emphasized. Then it’s a free-for-all. Everyone else dives right in, system by system, to dissect what went wrong or was handled poorly. All the people who are involved in the sim have a chance to comment on how things looked from their consoles…. It’s not a public flog: the goal is to build up collective wisdom.

If I’d defined success very narrowly, limiting it to peak, high-visibility experiences, I would have felt very unsuccessful and unhappy during those years. Life is just a lot better if you feel you’re having 10 wins a day rather than a win every 10 years or so.

In 1950 Koprowski began testing his vaccine on intellectually disabled children at Letchworth Village, a filthy, overcrowded institution for people with physical and mental disabilities in the tiny town of Thiells, New York.

Koprowski had minimized the SV40 monkey virus problem only four months earlier, when his own monkey kidney–based polio vaccine was still in the running for U.S. approval. Now, with Sabin’s vaccine rolling quickly toward being licensed, he sounded more alarmed.

If the WI-38 cells were ignored in the United States, abroad they were increasingly embraced.… It was a sign of the esteem in which Hayflick’s WI-38 cells were held that the British vaccine authorities … decided, perhaps as a matter of national pride, to derive their own analogous normal, noncancerous human diploid cells.

In the end, the rubella epidemic that swept the United States in 1964 and 1965 infected an estimated 12.5 million people, or 1 in 15 Americans. More than 159,000 of these infections included joint pain or arthritis, typically in women. Roughly 2,100 people developed encephalitis, a brain inflammation with a 20 percent mortality rate.

Some 6,250 pregnancies ended in miscarriages or stillbirths. An estimated 5,000 women chose to get abortions. Still another 2,100 babies were born, and survived, with congenital rubella syndrome. Of these, more than 8,000 were deaf; nearly 4,000 were both deaf and blind; and 1,800 were intellectually disabled. About 6,600 babies had other manifestations of congenital rubella, most typically heart defects. Often babies were born with several of these disabilities.

These numbers are, at the very best, approximations. They come from a 1969 CDC report whose authors stressed that it was not until 1966 that physicians were required to report rubella cases to authorities.

I had no idea what to say to this. I had been nurtured in the U.S. school system on a steady diet of the Great Men theory of history. History was full of Great Men. I had to take separate Women’s History courses just to learn about what women were doing while all the men were killing each other. It turned out many of them were governing countries and figuring out rather effective methods of birth control that had sweeping ramifications on the makeup of particular states, especially Greece and Rome.

Half the world is full of women, but it’s rare to hear a narrative that doesn’t speak of women as the people who have things done to them instead of the people who do things. More often, women are talked about as a man’s daughter. A man’s wife.

Frankly, my concern is not so much for the deniers of evolution as it is for their kids. We cannot address the problems facing humankind today without science—both the body of scientific knowledge and, more important, the process. Science is the way in which we know nature and our place within it.

the job of quantum theory should be to predict directly observable things…. It should not be expected to provide some kind of satisfying mental picture for the internal workings of the atom, because this is not necessary and it may not even be possible.

Sometimes this kind of panic over scary chemicals is disproportionate; there are trace amounts of natural arsenic in all our food and water, and we handle those fine. This is not one of those times.

The radiation levels would be incredibly high. Given that it takes a few hundred milliseconds to blink, you would literally get a lethal dose of radiation in the blink of an eye.

You would die from what we might call “extremely acute radiation poisoning”—that is, you would be cooked.

The seventh row would be much worse.