Science

Four billion years ago, the Earth, at the dawn of life, would have seemed like an alien planet around a violent star. What did this mean for the development of life? Dr. Richard Gray, professor of astronomy at Appalachian State University, is piecing it together with the “Young Solar Analogues” project.

A new study shows people living in hunter-gatherer societies don't get any more sleep than people in the more modern world, despite living without TVs, computers, cell phones and other electronic distractions.

More than 23,000 Americans end up in emergency rooms each year after taking dietary supplements, an analysis shows. Most cases are linked to weight-loss products or energy-boosting supplements.

Scientists soared through clouds with a new instrument that takes 3-D pictures of the edge. What they learned about the size and density of droplets surprised them and might lead to better forecasts.