JACKIE NORTHAM, BYLINE: I'm Jackie Northam in Washington. Today at the U.N., Russia and China vetoed a Western-backed draft resolution that warned of sanctions against the Syrian regime unless it complies with a peace plan.
This is the third time those two countries have used their veto power to block a resolution on Syria. Britain's U.N. ambassador, Mark Lyall Grant, called the decision by Russia and China appalling, and said it would lead to further bloodshed in Syria.
When Olympic swimmer Michael Phelps steps onto a starting block a few days from now, a Stanford scientist named Krishna Shenoy will be asking himself a question: "What's going on in Michael Phelps' brain?"
Specifically, Shenoy would like to know what's happening in an area called the premotor cortex. This area doesn't directly tell muscles what to do. But it's the place where the brain gears up for something the body is about to do, like swimming.
Here's your vocabulary word for the week: zoonosis. It describes an infection that is transmitted between species. For example, the disease that the husband and wife team of Bill Wasik and Monica Murphy have written about in their new book, Rabid: A Cultural History of the World's Most Diabolical Virus.