More than 20 Republicans are seeking the party's nomination for Colorado governor. Four of them debated Thursday night.

Concern grows over jailed Ugandan opposition figure—as his family says medical care is being denied.

(This photo of Pluto, taken in 2015, is from NASA's New Horizons space probe, which was launched in — you guessed it — 2006.) ...

This is Kateryna Hodunova reporting from Kyiv on day 1,428 of Russia's full-scale invasion of Ukraine. Today's top story: ...