ScienceDaily: Top Science News

Optimistic people have healthier hearts, study finds Posted: 09 Jan 2015 09:35 AM PST Using the American Heart Association's criteria, a study of 5,000 adults found that the most optimistic people had twice the odds of being in ideal cardiovascular health as their pessimistic counterparts.

Devil is in the detail: Evolution of color in plants and animals Posted: 09 Jan 2015 06:37 AM PST Researchers have looked at a species of fish to help unravel one of the biggest mysteries in evolutionary biology. "The importance of this work lies in the fundamental question: how and why do variants of the same animal exist in nature," researchers explain.

Map of mysterious molecules in our galaxy sheds new light on century-old puzzle Posted: 09 Jan 2015 06:35 AM PST Astronomers have created a unique map of enigmatic molecules in our galaxy that are responsible for puzzling features in the light from stars.