NOAA’s US winter weather outlook

NOAA has issued its winter 2019-2020 outlook for temperature, precipitation and drought for the US, including Alaska and Hawaii.

A tall ice cliff, with cracks indicating a calfing of the ice into the sea soon.

Ice cliffs in Antarctica might not contribute to extreme sea-level rise in this century

A 2016 study suggested tall ice cliffs along Antarctica’s coast might collapse rapidly under their own weight and contribute to more than 6 feet of sea-level rise by 2100. Now, MIT researchers have found this prediction may be overestimated.

Humpback whale.

Humpback whale population on the rise

After a near-miss with extinction, a population of humpback whales in the South Atlantic has rebounded.

Green and orange ball, with an irregular blue center.

2019 ozone hole smallest since its discovery

Thanks to abnormal weather patterns in the upper atmosphere over Antarctica, this year’s ozone hole is the smallest since the ozone hole was 1st observed in 1982.

A long and wide crack in a glacier, showing sea water in the crack.

New cracks in Pine Island Glacier are getting longer

The new rifts appeared soon after last year’s major calving of iceberg B46, which is about 3 times the size of New York’s Manhattan island. Satellite monitoring suggests a new iceberg of similar proportions will soon be calved.

Snow-capped mountains.

Researchers investigate dramatic melt of glaciers in Peru

Glaciers are melting in many places on Earth today. But glacier loss in the Peruvian Andes is happening particularly rapidly. New research reports a reduction of almost 30% between 2000 and 2016.

The last mammoths died on a remote island

A new study suggests that about 4,000 years ago, a combination of isolation, extreme weather, and the arrival of humans on Wrangel Island in the Arctic Ocean killed off Earth’s last population of mammoths.

How deep is the ocean?

On average the ocean is 2.3 miles (3.7 km) deep, but many parts are much shallower or deeper. In the deepest zones, life forms have adapted to live in the dark, under crushing water pressure.

Why leaves change color in fall

The vivid yellows and oranges of autumn leaves are there throughout spring and summer, but hidden.

These giant croc-like carnivores terrorized Triassic dinosaurs

Researchers have identified fossil remains as belonging to rauisuchians, predatory crocodile-like animals that fed on early dinosaurs and mammal relatives 210 million years ago.