Manganese and honey bees: The industrial metal manganese, once scarce, is now ubiquitous in our environment. New research suggests that it addles honey bees, which often act as sentinel species for environmental contaminants, even at levels considered safe for humans. MORE

Imagining the fourth dimension: Watch how mathematics lecturer Ivan Horozov, PhD, builds three-dimensional projections of four-dimensional figures in his office — in his spare time. Watch Video