Ukraine was the leading country Americans adopted from, but it halted adoptions this year after Russia's invasion. Now many families and children are in limbo.

Astronomers were stunned to find that the black hole was emitting energy, two years after it pulled apart a star that had come too close.

A recent stranding on remote New Zealand islands left nearly 500 pilot whales dead. Scientists still don't know for sure why the events, also known as beachings, occur, but they have some ideas.

No matter how much news and attention a congressional panel may generate, the ultimate effect depends on whether they alter the arc of a presidency or otherwise change the course of national history.