They scuttle, peck, scuttle, peck, then they dash up the shoreline, dodging waves, heads down, concentrating. What are they doing? They're "looking for something, something, something," writes the poet Elisabeth Bishop.
If you're having chest pain, your doctor can test you for a heart attack. If you're having hip pain, your doctor could test for osteoarthritis.
But what if you're depressed? Or anxious? Currently there are no physical tests for most disorders that affect the mind. Lab tests like these could transform the field of mental illness. So far efforts to come up with biomarkers for common mental health disorders have proved largely fruitless.
We've all been to concerts and performances that bring us to our feet in wild applause.
WERTHEIMER: But what makes us clap more for some performances than others? You'd think it's obvious: the better the show, the more applause. Think again. New research at Uppsala University in Sweden has revealed that applause spreads through a crowd more like a contagion than a reaction to a performer. Researchers watched audience members respond to academic talks - talks even as dull as this one.
America's hugely productive food system is one of its success stories. The nation will export a projected $139.5 billion in agricultural products this fiscal year alone. It's an industry that supports "more than 1 million jobs," according to Agriculture Secretary Tom Vilsack.
But all that productivity has taken a toll on the environment, especially rivers and lakes: Agriculture is the nation's leading cause of impaired water quality, according to the U.S. Environmental Protection Agency.
And now a big fish story. Last month a fisherman off the coast of Sitka, Alaska, brought in a record-breaking shortraker rock-fish. At nearly 40 pounds and three and a half feet long, the bug-eyed, bright orange beast is the biggest fish of its kind ever caught by a recreational fisherman.
Up next, you know, this week was Independence Day, and to celebrate, we're going to be looking at the life of Benjamin Franklin. We know him for his role in the American Revolution, but we're going to look at the great intellectual revolution he brought to America. Maybe you didn't know about that. Well, you can find out more about it in the new book, "The Society for Useful Knowledge: How Benjamin Franklin and Friends Brought the Enlightenment to America."
Exactly a year ago this week, a video on YouTube went viral. It was called "Heat Buckles Highway, SUV Goes Airborne." A road in Wisconsin buckled so badly from the heat that it sent cars flying. Well, this year, the buckling continues. But if you're in certain parts of the country, you don't need me to tell you that. It's hot, and I'm not going to use that but-it's-a-dry-heat line, either.