Category Archives: Science And Society

Hazardous Asteroids

may be more common than we thought:

The scientific orthodoxy said that a Chelyabinsk-size event ought to happen every 140 years or so, but Brown saw several such events in the historical record.

Famously, a large object exploded over the Tunguska region of Siberia in 1908. But there have been less-heralded impacts, including one on Aug. 3, 1963, when an asteroid created a powerful airburst off the coast of South Africa.

“Any one of these taken separately I think you can dismiss as a one-off. But now when we look at it as a whole, over a hundred years, we see these large impactors more frequently than we would expect,” said Brown, whose paper appeared in Nature.

But our response, and actions to become a space-faring civilization, remains pathetic.

The War On Saturated Fat

Is it time to end it?

Yes. Next question?

When you’ve lost the LA Times

[Update a few minutes later]

“When saturated fat got mixed up with the high sugar added to processed food in the second half of the 20th century, it got a bad name,” noted UC San Francisco pediatric endocrinologist Robert Lustig. On the question of which is worse — saturated fat or added sugar, Lustig added, “The American Heart Assn. has weighed in — the sugar many times over.”

Yes. Also, eating fat doesn’t make you fat. Two of the most damaging nutrition myths are that you get cholesterol build up from eating cholesterol, and you get fat from eating fat. Both are based on the primitive “you are what you eat” theory. Stop counting calories, eat things that are good for you (which include saturated fat) and avoid things that are bad (grains and sugar).