For decades, physicists searched in vain for evidence of gravitational waves, the stretches and squeezes in spacetime that were first predicted by Albert Einstein’s theory of general relativity a ...

The first detection of gravitational waves, which took place a few weeks ago, has brought attention to a physical phenomenon that had long been theorized: waves carry information and can signal ...

Gamma brain waves are rhythmic electric processes in nerve cells called neurons. Nerve activity in the brain allows for communication throughout the brain to carry out functions such as memory, ...

The earliest scientists first observed the waves that earthquakes produce before they could accurately describe the nature of earthquakes or their fundamental causes, as discussed in Lessons 1–5.

Waves transfer energy from one place to another. Light from the Sun travels through space and through the atmosphere, transferring energy to the Earth and other planets. Sound travels from a ...

The water began warming in the Gulf of Alaska in late 2013. Within a few months, sea surface temperatures had increased by an average of 5 degrees Fahrenheit, and in places by as much as 7°F.