Brain-implanted devices that allow paralyzed people to speak can also decode words they imagine, but don't intend to share.

NPR's Michel Martin asks former U.S. National Security Advisor John Bolton about the prospects for security guarantees in Ukraine and what they might look like.

Wildfires are tearing across Spain, killing several people and scorching nearly 1,500 square miles. This year's fire season is already among the country's worst on record.