Science News in Brief

* Best way to build children’s brains: play with them
Love beats trendy toys, classes or music as brain food for preschoolers, a report says.
* Radioactive scorpion venom deemed safe cancer treatment:
Scientists are exploring an unusual new treatment for an aggressive brain cancer.
* Human-dolphin partnership inspires gov’t protection:
The government of Myanmar has moved to safeguard a dolphin-fisherman collaboration.
* The science of sniping on eBay:
A despised practice of placing last-second bids is actually the best strategy in online auctions, according to scientists.
* Startling variety in planetary birthplaces:
Astronomers once thought the dusty clouds that spawn planets all looked pretty much the same. But no more.