This new passive cooling paint reflects sunlight, emits heat and mimics sweating to cool buildings without air conditioning, even in the tropics.

Variants of obesity-related genes influence how much weight patients lose on specific weight loss drugs like liraglutide, two studies report.

Most spider species subdue dinner by injecting venom from their fangs. Feather-legged lace weavers swathe prey in silk, then upchuck a killing brew.