Did El Niño cause an early breakdown in the polar vortex?

Elon Musk’s company will try to grab both parts of the rocket for the first time.

El Niño winters typically bring more rain in the southern USA and drier, warmer conditions further north but the impacts on snowfall are complex.

There is almost nowhere on Earth free from disruptive human noise – but it's one of the easiest environmental problems to solve

Quantum clocks usually rely on advanced lasers and isolated atoms in the lab, but a new experiment showed that the same clock design can work with sunlight instead