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EarthSky Voices

Global methane levels hitting new highs

Here’s why, after a 2000-era plateau, global levels of the greenhouse gas are hitting new highs.

Fire ants build with no master plan

Researchers identified simple behavioral rules that allow these tiny creatures to collaboratively build elaborate structures – rafts and towers – with no one in charge.

A universe of organisms living in your gut

Trillions of microorganisms living in your digestive system might influence your health, mood, even your weight.

If greenhouse gas emissions ended now…

Would climate change stop? The simple answer is no. A climate scientist explains.

Mystery of the moon’s tilted orbit

Had things gone differently in the early days of the inner solar system, the magnificent spectacle of a total solar eclipse might be a monthly event.

Asgardia’s 1st satellite due to launch

Asgardia’s 1st satellite – Asgardia-1 – will launch aboard a NASA mission to ISS later this summer. “Asgardians” are invited to send their personal data – a photo or a file of their choosing – to space with it.

How much traffic on eclipse day?

Expert analysis showing how many people – and how much traffic congestion – can be expected along the path of the August 21, 2017 total solar eclipse.

What’s a conjunction?

EarthSky community member Tom Wildoner explains the term “conjunction” in astronomy and provides an illustration.

Climate change shrinking Colorado River

Ongoing drought – and increasing temperatures – have reduced water flow in the Colorado River, with more dramatic reductions expected. This ongoing, unprecedented event threatens water supplies in cities in the U.S. West and some of the most productive agricultural lands anywhere in the world.

A novel approach to star trails

Featured in National Geographic and Nature, Canadian amateur astronomer Christian Sasse explains how he created his unique star trails, by superimposing images.