The Pacaya volcano in Guatemala is still erupting, spewing rivers of lava and ash clouds. See photos, video, and satellite images.

Around 80 million years ago, as tyrannosaurs ruled the Northern Hemisphere, Llukalkan aliocranianus – or the ‘one who causes fear’ – flourished in the southern continents.

A list of 10 new ocean species discovered in 2020.

After 800 years of dormancy, Fagradalsfjall volcano on Iceland’s Reykjanes peninsula began a magnificent eruption on March 19. See video and images.

A new study suggests that climate change is the key driver of changes in water flow in rivers worldwide.