A recent observation has revealed the prelude to one of the sun’s most powerful flares, captured in unprecedented detail.

Natural disasters like the one at Tracy Arm fjord, about 45 miles south of Juneau, could become more common as climate change ...

In 2018, the side of the Anak Krakatau volcano collapsed in a powerful eruption and produced a tsunami that killed hundreds and injured thousands on nearby Java and Sumatra in Indonesia. A new ...