Sounding the Alarm: Comets Pose Threat to Earth, Too

Comets can also deliver a heaping helping of calamity to Earth, and scientists and policymakers alike should start taking measures to combat the threat, said Joseph Nuth, a researcher at NASA's Goddard Space Flight Center in Greenbelt, Maryland. "Comets have largely been ignored by people that are interested in defending the planet," Nuth said during a news conference Monday (Dec. 12) here at the annual fall meeting of the American Geophysical Union (AGU). The main reason for this lack of attent