Originally published on Tue February 19, 2013 10:36 am
A tractor spreads fertilizer at a dairy farm in Morrinsville, New Zealand.
Credit Sandra Mu / Getty Images
If you've ever played around with one of those carbon or water footprint calculators, you probably know that meat production demands a lot from the environment — a lot of oil, water and land. (Check out the infographic we did on what goes into a hamburger last year for Meat Week.)
But have you thought about your meat's phosphorus footprint? Probably not.
When Napoleon Chagnon first saw the isolated Yanomamo Indian tribes of the Amazon in 1964, it changed his life forever. A young anthropologist from the University of Michigan, he was starting on a journey that would last a lifetime, and take him from one of the most remote places on earth to an international controversy.
That controversy would divide his profession and impugn his reputation. Eventually he would come to redefine the nature of what it is to be human.
The Berlin-Potsdam Railway (1847) by Adolph Menzel
Credit Joerg P. Anders / bpk Berlin/Alte Nationalgalerie/Art Resource
The painter Adolph Menzel (1815-1905) is not well-known, even in his native Germany. He was tiny and ugly and never married; he wrote in his will that "there is a lack of any kind of self-made bond between me and the outside world." Perhaps this lack of bond is what made it possible for him to devote himself so totally to the task of making pictures.
Menzel drew constantly. He drew everything. He drew with his left hand and with his right. He drew on napkins and on the backs of menus. No social event was so formal, or so intimate, it seems, as to quiet his active hands.
The much-anticipated close flyby of a large asteroid was upstaged Friday when a meteor unexpectedly streaked across the sky over Russia. The ensuing explosion sent window shards flying and injured hundreds of people.
Originally published on Tue February 19, 2013 9:47 am
Extra weight is no defense against aging, says a demographer who argues that the apparent benefits from being overweight are a mirage.
Wouldn't it be great, considering how many of us are overweight, if carrying a few extra pounds meant we'd live longer?
A recent analysis of nearly 100 published studies involving almost 3 million people found, surprisingly, that being a little overweight was associated with a lower risk of death than having a normal weight or being obese.
This is SCIENCE FRIDAY. I'm Ira Flatow. Anyone who's taken a high school science class knows the name Isaac Newton. You remember this tale: He's sitting under a tree, an apple falls on his head, he figures out gravity, or so the story goes. Not really true.