The search for obesity drugs targets hunger's complex chemistry

Discoveries of hormones related to weight and appetite in the '90s helped spur a search for obesity treatments targeting those hormones— with disappointing results. Now scientists are taking a new tack that could finally ...

Painting fingernails with silver and gold

Since ancient times, people have used lustrous silver, platinum and gold to make jewelry and other adornments. Researchers have now developed a new way to add the metals to nail polish with minimal additives, resulting in ...

Social bees have kept their gut microbes for 80 million years

About 80 million years ago, a group of bees began exhibiting social behavior, which includes raising young together, sharing food resources and defending their colony. Today, their descendants—honey bees, stingless bees ...

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