Chunks of Earth's outer crust that are 3.8 billion years old provide rock-solid evidence that the planet had active tectonic plates shortly after its birth.

The new species were unearthed in Mongolia. One ranks among the smallest non-avian dinosaurs ever discovered.

Scientists have some lab mice seeing red. The animals have had their vision genetically upgraded and can now see colors invisible to normal rodents.

Twice as many women as men want to cut back on work hours, even at the sacrifice of pay. Perhaps they could "lend" their hours to the unemployed, a researcher suggests.

Tomatoes irrigated with diluted seawater grow with significantly higher levels of healthy antioxidant compounds, new research shows.

Long thought to be a dog snapper in Brazil, a popular game fish is actually a new species, dubbed Lutjanus alexandrei, which lives among the expansive reefs of the Abrolhos region in the South Atlantic Ocean.