Robots that can function in the Arctic's extreme storms and cold will become increasingly important for everything from securing and inspecting remote facilities to ensuring northern security, say res ...

A star that once symbolized constancy is suddenly looking far less steady. Astronomers are turning fresh attention to Polaris, the North Star, not for its poetic role in navigation lore but because ...

For a generation, cosmologists have treated dark energy as a fixed backdrop, a steady pressure stretching space faster and ...