Science

Social network Nextdoor moves to block racial profiling online
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.
New Bell Museum will include a walk-through diorama
The Bell Museum of Natural History will soon move into a new and bigger home. George Weiblen, one of the museum's curators, shared details on the new facility.
Google's search engine directs voters to the ballot box
Google is pointing its users to voting booths this presidential election. The search giant will provide a summary box detailing state voting laws.
NASA: Last month was Earth's hottest in recorded history
Even after the fading of a strong El Nino, which spikes global temperatures on top of man-made climate change, July burst global temperature records.
Talk about an ancient mariner! Greenland shark is at least 272 years old
This Arctic species can live longer than any other known animal advanced enough to have a backbone, scientists say -- maybe more than 500 years. Their muscles might hold clues that could help humans.
How to see the Perseid meteor shower (it's going to be twice as nice)
The meteor shower will light up the skies this week, peaking late Thursday into Friday. This year, we're in for an even better show than usual, thanks to an "outburst."
The Chimera quandary: Is it ethical to create hybrid embryos?
The National Institutes of Health proposed lifting its moratorium on funding for research on part-animal, part-human embryos -- which raises a huge dilemma, says bioethicist Insoo Hyun.