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How likely is a white Christmas?

Are you dreaming of a white Christmas? Here’s the historic probability for one, in the U.S.

Did Ice Age hunters burn Europe’s forests?

Large-scale forest fires started by prehistoric hunter-gatherers are probably the reason Europe is not more densely forested, says a new study.

Today in science: Tycho Brahe

Tycho Brahe is known for his partying, his prosthetic nose, and for being one of the greatest astronomers of all time.

1st test of new theory of gravity

Eric Verlinde’s new theory of gravity – an alternative to Einstein’s theory – eliminates the need for dark matter. To test it, astronomers measured gravity around 33,000 galaxies.

Parts of brain sleep, wake up, all day

New research finds that small regions of your brain cycle in and out of sleep, even when you’re awake.

Landing on Mars is hard

Mars’ atmospheric pressure is less than 1% that of Earth, so spacecraft come down hard. Europe has been trying for a Mars’ soft landing since 2003. How they plan to succeed.

A front view of Lucy, based on a reconstruction by paleoartist John Gurche. Image credit: Smithsonian Institution Human Origins Initiative. http://humanorigins.si.edu/australopithecus-afarensis-lucy-adult-female-reconstruction-base-al-288-1-artist-john-gurche-front

Human ancestor Lucy a tree climber

Lucy lived 3.18 million years ago in what’s now Ethiopia. An analysis of high-resolution CT scans of her fossilized skeleton shows she was equipped for climbing trees.

The circadian rhythm of our microbes

Like most life on Earth, our gut microbes have their own circadian rhythm. Disrupting that daily routine can be bad – and keeping it in balance can be good – for whole body.

Hurricane risk to US northeast coast

Due to shifting weather patterns, the northeastern coast of the United Sates could see more frequent and more powerful hurricanes in the future, says new research.

2016-17 winter outlook for US

NOAA’s outlook for this winter predicts a warmer, drier South, and cooler, wetter North. Drought is expected to persist in California and expand in the Southeast.