The justices return from summer break to hear arguments in Boulder, Colorado’s lawsuit against Exxon Mobil and Suncor Energy.

Conservative Supreme Court Justice Samuel Alito will no longer participate in a major climate case after facing calls because of his stock holdings in oil companies.

Nepal's prime minister scolded fellow world leaders Thursday, saying the nation's recent deadly flood reminds a warming world that climate change keeps hurting people who didn't cause the crisis but ...