By David Dannecker
Senior Editor

Changing the definition of ‘habitable’ in the search for extrasolar planets, some astronomers are now seeking ‘superhabitable’ worlds.

Utah’s Governor Gary Herbert joins the growing ranks of Republican governors who are beginning to cooperate with the Obamacare rollout and Medicaid expansion.

What are the practical implications of Obama’s big NSA speech? Pretty few actually.

Hong Kong follows the lead of the United States and China in announcing the world’s biggest single destruction of black market ivory.

New species of anemone discovered that lives on the underside of Antarctic sea ice.

A ceasefire has been reached after weeks of fighting in South Sudan, the world’s youngest nation.

A Chinese company intends to build a full-size replica of the Titanic for a new theme park so that visitors can experience the disaster, because what could go wrong?

Image by NASA