ScienceSolved: Mystery how geckos use their feet to stick to walls and ceilings Geckos, and some insects and spiders, hang upside down, or crawl along vertical surfaces. Atomic forces were known to be responsible, but researchers now know how the animals turn this attraction on and off.by James Maynard
ScienceScientists try to explain evolution, extinction of rangeomorphs from 600 million years agoby Rhodi Lee