What is a sun pillar, or light pillar?

Sun pillars, or light pillars, are shafts of light extending from the sun or other bright light sources. They’re caused by ice crystals drifting in Earth’s air.

All you need to know: December solstice

December solstice 2018 arrives on December 21 at 22:23 UTC. High summer for the Southern Hemisphere. For the Northern Hemisphere, the return of more sunlight!

Huge previously-undetected coral reef off US East Coast

Earlier this year, scientists were surprised to discover a huge forest of coldwater corals off the coast of South Carolina. A scientist aboard the expedition discusses the find.

Scientists describe 229 new species in 2018

The list includes neon fish, a fast-spinning spider, moray eels, venomous snakes, and more!

What would a warmer world look like?

According to the recent IPCC Special Report, warming of 1.5°C (2.7°F) is an important threshold for many climate impacts. What might our planet look like with 1.5°C of warming?

Christmas Bird Count starts December 14

Audubon’s annual Christmas Bird Count is one of the longest-running citizen science projects in existence. How to participate.

Another El Niño on the horizon?

The World Meteorological Organization has said there’s a “75–80% chance” of a fully-fledged El Niño event by February, 2019. Click in for a good video from ESA describing El Niños and their global effects.

Watch geckos race on water!

Geckos are renowned for their acrobatic feats on land and in the air. Turns out they can also run on water.

Supervolcano eruption 20,000 years ahead?

Italy’s Phlegraean Fields – one of Earth’s most active and volatile volcanic regions – is readying for a catastrophic eruption, says new research. But not for thousands of years.

When is my earliest sunset?

For the southernmost U.S and similar latitudes, the earliest sunsets of the year are happening now. Your earliest sunset depends on your latitude, but always comes before the winter solstice.