Sea sponges collect DNA from fish, penguins, seals

A new study reports that sponges, which can filter 10,000 liters of water daily, catch DNA in their tissues as they filter-feed.

Scuba diver under water.

How to celebrate World Oceans Day 2019

World Oceans Day is Saturday, June 8. Celebrate! Plan or find an event. Participate on social media. Or … just go to the beach. Some ideas for participating here.

Snow-capped mountains and white swirling snow.

Melting small glaciers could add 10 inches to sea level by 2100

A new analysis of 200,000 glaciers worldwide paints a picture of a future planet with a lot less ice and a lot more water.

Lake Baikal: Earth’s deepest, oldest lake

Lake Baikal in southern Siberia is 25 million years old and more than 5,000 feet (1,500 meters) deep. More than 2,500 plant and animal species have been documented in the lake, most found nowhere else. Controversy surrounds construction of hydropower stations on a river that feeds the lake.

View from space of ice-covered Great Slave Lake.

View from space: North America’s deepest lake

Roughly the same size of Belgium, Canada’s Great Slave Lake runs nearly 2,000 feet (600 meters) deep. This article from NASA Earth Observatory describes the lake and conditions around it in 2019.

Black-and-white animation of high, wispy, illuminated clouds in a night sky.

Curiosity sees noctilucent clouds shining in Mars’ sky

Late last month, the Curiosity rover picked up wonderful images of noctilucent – or “night-shining” – clouds in the Martian sky. Plus – if you’re at a high latitude on Earth now – it’s time to start looking for these clouds.

Purple silhouettes of a modern beaver, a human, and a giant beaver.

Why super-sized beavers went extinct

Super-sized beavers were as big as black bears. They suddenly became extinct 10,000 years ago, while small modern beavers survived. Now scientists know why.

Crushed boat and wood debris at the edge of a bay under a blue sky.

It’s hurricane season: 4 things to know

Atlantic hurricane season begins June 1 and ends November 30. Here’s how forecasters make predictions, whether to stay or evacuate, what kinds of risks extend inland, and how your social networks can help or hurt you.

Photo showing the eyewall of Hurricane Michael

How do hurricanes get their names?

The World Meteorological Organization manages the formal system by which hurricanes receive their names. Find hurricane names for 2019 here.

April 2019 2nd hottest on record for globe

April 2019 was the 2nd-hottest April in the climate record, dating back to 1880, and the period from January-April was the 3rd-hottest year-to-date on record. In the Arctic, sea ice coverage shrunk to a record April low.