科學(xué)60秒:棒球裁判與數(shù)學(xué)結(jié)緣

The traveling salesman problem is a favorite math conundrum: if a salesman has to visit a ____1____ of cities, how do you get him to all of them once via the shortest possible route. But the trav...

科學(xué)60秒:身體溫暖保健康

As a bitter winter storm rages on the east coast, it’s hard to knock being warm-blooded. But what about the metabolic cost of maintaining a high body temperature? Well, a new study finds that we...

科學(xué)60秒:尋找“地球號”

If there's a line in Vegas on the odds of life on another planet, now might be a good time to -1-. A study in the journal Science examined 166 sun-sized stars and found nearly one in four had roc...

告別寂靜的春天

故事Rachel Carson was a scientist and a bird watcher. She noticed, in the late '50s, the gradual disappearance of some birds, and linked it to our use of 1)pesticides. She wrote a book about her ...