Nina Fedoroff: "One of the biggest challenges is how to raise the grain crops, the soybeans, the corn, the wheat that will thrive in a much harsher climate."
The weather pattern over the United States is poised to change once again, pushing most of the country back to where we were back in December 2011: warm.
British, Russian and American teams all are aiming to sample buried lakes in Antarctica. Now a British team has returned after successfully hauling its gear into place.
Astronomers found a ring system in a distant solar system when the rings blocked the light of that distant sun, and caused a temporary dimming of its light.