geojim56

From the page: Was there a Stone Age apocalypse or not? One narrative has it that about 13,000 years ago a comet blasted North America, wiping out the continent's megafauna - as well as its early settlers.

I agree with Kennett....

From the page: "The mystery of where the moon's water came from may soon be solved. Evidence from NASA's LCROSS mission suggests much of it was delivered by comets rather than forming on the surface through an interaction with the solar wind."

From the page: Planet by planet, here's a quick guide to how our vision of the solar system has changed in the past 30 years.

From the page: Why is it broadly accepted that the elderly should have universal health care, while it's immensely controversial to seek universal coverage for children? What's the difference â�,�” except that health care for children is far cheaper?

Nice presentation of seismic data for part of the Tibetan Plateau.

From the page: "The oceans play a key role in regulating climate, absorbing more than a quarter of the carbon dioxide that humans put into the air. Now, the first year-by-year accounting of this mechanism during the industrial era suggests the oceans are struggling to keep up with rising emissions -- a finding with potentially wide implications for future climate. The study appears in this week's issue of the journal Nature."

Also reported here.

From the page: There is a lingering suspicion among girls (as the unpopularity of science subjects demonstrates) that boys don't value cleverness as an essential quality in a life partner. Given a choice between gorgeous or brainy, there is no guarantee they'll do the right thing, because men think they're clever enough for two. Well, it turns out they're wrong. Swedish scientists have discovered that long life and good health have nothing to do with a man's education and everything to do with his wife's. Men married to smart women live longer -- simple.

From the page: Utilising a unique link between a survey of over 60,000 people and a comprehensive mortality database, the researchers found that over the four years following the survey, the mortality risk was increased to a similar extent in people who were depressed as in people who were smokers.