Tag: Population

Matt Ridley, author of The Rational Optimist, looks at past rates of food production to explain why it should eventually be possible to produce enough food to feed a global population of 9 billion people.

ScienceDaily (Mar. 9, 2010) A team of scientists has discovered that the drastic decline in Arctic musk ox populations that began roughly 12,000 years ago was due to a warming climate rather than to human hunting.

"This is the first study to use ancient musk ox DNA collected from across the animal's former geographic range to test for human impacts on musk ox populations," said Beth Shapiro, the Shaffer Career Development assistant professor of biology at Penn State University and one of the team's leaders. "We found that, although human and musk ox populations overlapped in many regions across the globe, humans probably were not responsible for the decline and eventual extinction of musk oxen across much of their former range."