Credit Matt Colbert / University of Texas at Austin
We humans can brag about our large brain, but in fact most mammals — from aardvarks to zebras — have big brains for their body size. For years, scientists have wondered what evolutionary forces pumped up the mammal brain so much, and now they may have an answer.
It would be easy — expected, even — for Mary Johnson and Oshea Israel to be enemies. After all, he killed Johnson's only son, in 1993. He went to prison for that — and toward the end of his sentence, he and Johnson made peace.
As a teenager in Minneapolis, Israel was involved with gangs and drugs. One night at a party, he got into a fight with Laramiun Byrd, 20, and shot and killed him. Oshea is now 34; he finished serving his prison sentence for murder about a year and a half ago.
A deadly virus is spreading among horses in the western United States and parts of Canada. The highly contagious Equine Herpes Virus-1 isn’t a threat to humans. But it spreads easily among horses and even llamas and alpacas. So far, it’s caused scores of horse owners to quarantine their animals. And as KUNC's Kirk Siegler reports, it’s also forced the cancelations of horse shows and competitions in Colorado and other states.
With the White House having raised expectations in advance, President Obama's speech Thursday about the Middle East and North Africa left many people in the region disappointed.
Obama was attempting to square a difficult circle. He wanted to reaffirm America's support for democratic aspirations, but at the same time did not want to worsen a rift with allies such as Saudi Arabia about the pace of change.