Stories by Geoff Brumfiel

Cloud Formation May Be Linked to Cosmic Rays

Experiment probes connection between climate change and radiation bombarding the atmosphere.

The Warm Hues of Fall Foliage

Competing theories try to explain the season's spectacular show of color, but most come up short

The Milky Way's Hidden Black Hole

A giant x-ray flare from the heart of our galaxy is helping researchers test ideas about a black hole they believe lurks there

Keck Telescope Reveals an Inconsistent Constant

Study Suggests Cosmic Rays May Destroy Ozone

New Microscope Creates Images Using Antimatter

Trapped Ions May Lead to New, Cheap Mass Spectrometers