
Some Greenland polar bears are surviving with very little sea ice
The ‘glacial mélange’ on which they’ve come to rely — a mix of ice, snow and slush — could be a temporary refuge for some polar bears.
The ‘glacial mélange’ on which they’ve come to rely — a mix of ice, snow and slush — could be a temporary refuge for some polar bears.
Virtual reality is an immersive, 3-D artificial environment created by a computer.
A handful of rules can describe the route some object repeatedly takes around another in space. Calculating that path, however, can be quite complex.
Giant mammals and people thunder through our movies and books. But real mammals can only get so large before they can’t take the heat.
New high-speed video reveals how normally mild-mannered geckos can violently shake venomous prey into submission.