What is color? It seems like a simple question at first, but when you think about it, the reality of what we’re seeing is a pretty complex situation. Our human eyes sift through a small piece of the vast electromagnetic spectrum and translate it into every color of the rainbow.

Astronauts who’ve lived on the International Space Station and “walked” in space tell all: what it’s like to ride on a space ship, and to eat, sleep, exercise, and even do science—in space.

Cosmology is the one field in which researchers can—literally—witness the past. The cosmic background radiation, ancient light streaming toward us since the Big Bang, provides a pristine window onto the birth and evolution of the universe.

Researchers are racing to uncover the implications for the Arctic of rapidly vanishing polar ice – and they’re enlisting help from the very creatures that stand to gain the most from their discoveries: the Narwhal, Bowhead and Beluga whales, three of the most elusive species on Earth.

Every successful scientist seems to have a “once in a blue moon” discovery during his or her lifework: an accident or epiphany that unexpectedly leads to a serendipitous breakthrough. Geneticist …

Geckos performing death-defying wall-climbing feats inspired materials scientist and engineer Michael Bartlett to invent adhesive that’s sticky powers are just as strong as this reptile. His Cool Jobs is developing …