In every life that includes a dog , there comes a heartbreak unlike any other. They arrive in our world full of spirit ...

Researchers believe dark rocks at the site of a future Mars rover landing mission may be left over from ancient volcanic ...

Making panda stem cells, mapping a fruit fly’s brain and witnessing a black hole wake up were among the biggest achievements of the year.

From a total solar eclipse that captivated our continent to record temperatures that scorched the planet, these were the ...

The U.S. flu season is underway, with cases surging across much of the country, health officials said Friday. The Centers for Disease Control and Prevention noted sharp increases in several measures, ...