Trump's tweets are considered part of the presidential record, which federal law says must be preserved. His deleted posts are alarming experts and prompting grassroots archival efforts.

Amid growing concerns over e-cigarette health risks, the Drug Enforcement Administration says it will collect vaping devices and cartridges at National Prescription Drug Take Back Day on Saturday.

Extensive structural damage was apparent by sunrise, but no fatalities or injuries have been reported, Mayor Eric Johnson said early Monday.

The overall percentage of Americans who support tougher gun laws is on the rise, even as the partisan divide remains stark, according to a Pew Research Center survey.

Astronauts Christina Koch and Jessica Meir will replace a faulty power regulator on the International Space Station. Only 14 women have participated in spacewalks, and all were accompanied by men.