Megalodons – the extinct giant sharks that lived in most of Earth’s oceans about 3 million years ago – gave birth to babies that were larger than adult humans, scientists say.

Forty years of satellite data show that 2020 was just the latest in a decades-long decline of Arctic sea ice.

Clouds in the sky can mimic cresting ocean waves. These photographic clouds are called Kelvin-Helmholtz clouds, and occasionally also go by the name billow clouds or shear-gravity clouds.

Overnight on Sunday, USGS reported lava fountains that shot nearly 165 feet into the sky from a fissure on the eastern side of Kilauea volcano in Hawaii. Lava has replaced the water that was in the basin of the crater, and a new lava lake was formed.

Antarctic iceberg A-68A has drifted menacingly close to a remote island in the southern Atlantic Ocean. The giant iceberg could strike land this month. It has now split into 2 pieces.

Early ice retreat amid warm Arctic air temperatures set the stage for the slow refreeze in 2020.

Plans are in place to create the world’s 4th-largest fully protected marine reserve at the Tristan da Cunha archipelago.