The president announced a total of $700 million in federal money to reinvigorate the domestic coal industry, which has been in decline for decades.

He mapped the herpes simplex virus genome, revealing how it invades cells. His work also helped lay the groundwork for potential vaccines and gene therapies.

Gwynne Shotwell, the president and chief operating officer, is the adult-in-the-room foil to Mr. Musk as SpaceX prepares for a blockbuster initial public offering.

Light pollution prompts plants to shed pollen longer and stronger, according to new research.

A decade-old treatment plant in San Diego County, Calif., could leave more water in the Colorado River for states facing severe shortages.

The space agency announced that the MAVEN spacecraft, which has circled Mars for more than a decade, is being decommissioned.