Dinosaurs' Climate Shifted Too

Ancient rocks from the bottom of the Pacific Ocean suggest dramatic climate changes during the dinosaur-dominated Mesozoic Era, a time once thought to have been monotonously hot and humid.

Sorting facts and opinions for Homeland Security

What are newspapers around the world saying about the latest speech by President George W. Bush? More importantly, how much of what they are saying is factual and how much opinion? And down the line, are some of the opinions ...

From zero to a billion electron volts in 3.3 centimeters

In a precedent-shattering demonstration of the potential of laser-wakefield acceleration, scientists at the Department of Energy's Lawrence Berkeley National Laboratory, working with colleagues at the University of Oxford, ...