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San Diego Gas & Electric's launch this week of an Instagram account highlighting wildfire prevention efforts could be called "the G.O.A.T.," as the domesticated farm animal is its main attraction.

It started as a one-off dinner with a chatbot — a night of shrimp, sarcasm — then veered into something unsettlingly human.

The overdose reversal drug naloxone is plentiful but not always accessible. The city of San Diego and the Harm Reduction Coalition introduced their effort to bring supplies to libraries and other locations in San Diego.

Advisers to the Centers for Disease Control and Prevention recommended against flu shots containing the ingredient thimerosal. Why is the additive, safely used since the 1930s, being questioned again?

Dr. Mark Sawyer says recent changes to the Centers for Disease Control and Prevention’s vaccine advisory committee could cause confusion, lower vaccination rates, and undo decades of progress.

American scientists have long worked abroad, but recruitment efforts are increasing due to cuts by the Trump administration.

Martin Cooper changed the world when he invented the portable phone. The Motorola company’s four-pound box has evolved into a global army of powerful smartphones weighing ounces.

Hundreds of acres in Michigan are covered in parallel rows of earth that are the remains of an ancient Native American agricultural system. The surprise find has archaeologists amazed.

Climate.gov is the main source of timely climate-related information for the public. It will stop publishing new information because the Trump administration laid off everyone who worked on it.

Researchers using data from the James Webb Space Telescope recently announced they had detected biosignature gases on planet K2-18b. A new analysis of the same data casts doubt on the earlier findings