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EarthSky Voices

What’s the hottest Earth has ever been?

Earth’s hottest periods occurred before humans existed. Those ancient climates would have been like nothing our species has ever seen.

Signs of climate change at Arctic tree line

Near the Arctic Circle, in northern Alaska, is where forests give way to tundra. Researchers are looking at how the warming climate might affect the ecology of this northern boundary.

Climate change affecting all life on Earth

A new analysis of hundreds of studies says that almost every aspect of life on Earth has been affected by climate change ... and that's not good news for humans.

What happens if the sun disappears?

Some things that would happen here on Earth if our giant source of heat and light were to vanish from the sky, and how long it would take.

Team solves mystery of London killer fog

A fog blanketed London in December 1952, killing as many as 12,000 people. Its exact cause and nature puzzled researchers for decades … until now.

2016 likely hottest year on record

It'll be the hottest year on record unless the final weeks of 2016 are the coldest of the 21st century so far, according to the World Meteorological Organization.

Daylight saving time worth the trouble?

Who benefits from the time change? A scientist on why DST is more burden than boon.

How many genes to make a person?

The answer – fewer than are in a banana – has implications for the study of human health and raises questions about what generates complexity anyway.

Asgardia: Space nation or pie in sky?

"I have become citizen number 62 of Asgardia, a new space nation dedicated to expanding peaceful exploration of space for the benefit of humanity."

Asgardia, the nation state of space

Russian businessman Igor Ashurbeyli believes that an orbiting space station has the potential to become a sovereign nation in space.