Stem cell advance

Stem cell advance
Stem-cell therapy is inching ahead. The study did not prove that it works, but other trials are started up. What took so long? More »

Ebola on the march!

Ebola on the march!
It’s “classic dogma”: Bad bacteria and viruses grow less dangerous over time. Not always! More »

Ebola’s end: History’s lessons

Ebola’s end: History’s lessons
As Ebola ravages West Africa, we seek answers in past epidemics. How did cholera, plague, smallpox end? Lacking drugs or a vaccine, how More »

Flying south for the winter?

Flying south for the winter?
A look at long-distance migration reveals surprising pattern. Migration did not originate in the tropics, home of bird diversity. More »

Lies and liars: Can you catch them?

Lies and liars: Can you catch them?
We asked how to catch a liar. Liars challenge our law, economy and society. If you want to catch a liar, you might as well flip a coin. More »

College admission conundrum?

College admission conundrum?
Critics carp about college entrance exams and point to data showing that high-school grades better predict success. How do the More »

Brewing biofuel

Brewing biofuel
The struggle to make fuel from wastes from farm, factory and forest continues. What’s keeping cellulosic biofuel out of the market? More »

Winter woes? No problem! say plants

Winter woes? No problem! say plants
Plants have evolved numerous ways to endure cold, wind and ice formation. How do they do it? How is climate change affecting plants and More »

As snow goes, where go the animals?

As snow goes, where go the animals?
Animals like the wolverine evolved to live in the snow, and they excel in conditions that defeat most animals. How will they fare if More »