Social networks let users share without being impeded. But Nextdoor, a platform for neighborhoods, is moving to block posts for the first time when they appear to be racial profiling.

Four years after the Koch political network backed Mitt Romney, it's now spending millions to save the GOP Senate majority from their own presidential candidate.

Arctic ice has shrunk this year almost as much as it did in 2012 — the most severe melt to date.

It may look like a cartoon character but the bright purple creature with giant eyes is real. It's also pretty tough.

A special court in Sacramento, Calif., aims to keep families together by getting treatment for parents who have substance abuse problems, instead of sending off their kids to foster care.

Violence erupted and businesses were set ablaze after an officer shot and killed a 23-year-old man during a foot chase Saturday.

Earlier this year, a pair of scientists predicted the existence of a ninth planet based. The race is on to be the first to spot it in a telescope.

Even tiny amounts of lead in the water can cause IQ deficits in children or high blood pressure in adults.

One teacher leads conversions with her fellow teachers and students about bias. She's never thought it was more important than she does now.

Slaughterhouses, while safer than decades ago, are some of the country's most hazardous workplaces. They are fined by the government for safety violations, but those fines may not be big enough.