The Universe

Scientists Unravel Secrets of Monster Black Hole at Center of Milky Way

A supermassive black hole in the core of the Milky Way last erupted two million years ago, and will again.

Chemical Exposure Linked to Billions in Health Care Costs March 5, 2015
Chemicals that mimic estrogen and other hormones are costing the EU $175 billion per year in health care, according to new research.
Elizabeth Grossman
As Smog Thins in L.A., Dramatic Evidence of Kids' Healthier Lungs March 4, 2015
New study shows Los Angeles-area kids have fewer breathing problems now than they did in the 1990s.
Craig Welch
Lack of Snow Leaves California's 'Water Tower' Running Low March 4, 2015
Rising temperatures and declining snowpack in the mountains mean that the drought across the western U.S. is about to get even worse.
Dennis Dimick
Arctic Ship Breaks Free of Ice for Historic Expedition March 3, 2015
A Norwegian research vessel will spend six months on the sea ice to study the changing Arctic.
Andy Isaacson
How Geothermal Could Cleanly Power the Planet: Indonesia's Tale March 5, 2015
The Earth's heat could power homes and businesses worldwide, but it's barely been tapped. Indonesia is trying to change that.
Wendy Koch