Today in History for Oct. 12: In 451, nearly 600 bishops of the Christian church began meeting at the Second Ecumenical Council. After several days of debate, the Chalcedonian creed, which affirmed ...

Fresk converts the latest climate science into a hands-on card game, helping players understand the causes, effects and feedback loops of climate change.

With the annual UN climate forum right around the corner, leading experts share why they have lost hope in international ...