The overload of fans trying to buy Taylor Swift tickets caused major tech issues. The singer responds that her team was assured the demands would be met.

Galaxies that existed soon after the Big Bang turn out to be surprisingly bright, a discovery that's both thrilled and puzzled scientists who study how the universe evolved over time.

The destruction of four dams on the lower Klamath river will open up hundreds of miles of salmon habitat. U.S. regulators approved the plan Thursday in a unanimous vote.

Kherson is coming back to life after more than 8 1/2 months under Russian occupation. There's no water or electricity, but residents are celebrating — even as they recall the horrors of occupation.