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Bomb Detecting Spray
A new spray makes would-be bombers' hands turn red.
Baby Robots
Researchers have developed a new way for children once left behind by their peers to explore the …
Autumn Color
Fall colors come in several shades. But why the different colors?
Shaved Hair
A listener asks: If you shave, does hair really grow back thicker and darker than before?
Bus Schedule Math
Engineers have developed a mathematical algorithm for optimizing bus schedules.
Future River Flow
Climate change may alter how rivers flow in the future, and man-made dams could make things worse.
Hot Extinctions
Warmer temperatures have consistently preceded more extinctions throughout Earth's history.