Most animals, like humans, have separate sexes.  We are born, live out our lives and reproduce as one sex or the other, but some animals live as one sex in part of their lifetime and then switch…

Sliced light is how we communicate now. Millions of phone calls and cable television shows per second are dispatched through fibers in the form of digital zeros and ones formed by chopping laser…

Whenever humans create a new antibiotic, deadly bacteria can counter it by turning into new, indestructible super-bugs. That's why bacterial infection is the number one killer in hospitals today. But…

If you're a female science teacher, male students tend to underrate you.   Even worse, if you are a female science teacher in physics, both male and female students underrate you,  …

Picture a tree in the forest. The tree "inhales" carbon dioxide from the atmosphere, transforming that greenhouse gas into the building materials and energy it needs to grow its branches and leaves.…

Some stars go ballistic, racing through interstellar space like bullets and tearing through clouds of gas.   Images from NASA's Hubble Space Telescope, taken by Raghvendra Sahai of NASA's Jet…

Scientists today announced the discovery of 10 amphibians believed to be new to science, including a spiky-skinned, orange-legged rain frog, three poison dart frogs and three glass frogs, so called…

Adolescents and young adults who are heavy users of marijuana are more likely than non-users to have disrupted brain development, according to a new study. Pediatric researchers found abnormalities…

In the year of the 200th anniversary of the birth of Darwin, researchers using comparative genomics have uncovered genetic clues about why some strains of the pathogen that causes Q fever, Coxiella…

The Galapagos Islands are an archipelago situated some 1 000 km to the west of Ecuador in the Pacific Ocean.  They were formed by volcanic activity around 10 million years ago. Out of the 19…