Switchgrass hybrid yields insights into plant evolution

Switchgrass is attractive as a potential bioenergy crop because it can grow for years without having to be replanted. Requiring less fertilizer than typical annual crops like corn, switchgrass can keep more nitrogen, phosphorus ...

When the extreme becomes the norm for Arctic animals

Think of reindeer on Norway's Svalbard archipelago as the arctic equivalent of sloths. It's not a perfect analogy, except that like tropical sloths, Svalbard reindeer move as little as possible to conserve energy.

Traffic jams lend insight into emperor penguin huddle

Emperor penguins maintain the tight huddle that protects them from the harsh conditions of an Antarctic winter with stop-and-go movements like cars in a traffic jam, a new study has shown.