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If a key ocean current collapses it could plunge northern Europe into a big freeze. Now researchers are weighing up a drastic intervention – building a 130-kilometre-wide dam between the US and Russia
The US Department of Defense has released hundreds of documents and photographs related to UFOs, some of which have been declassified, in the first of many drops to come
Many flowering plants have duplicated genomes, which could have helped them evolve to deal with extreme stress in times of environmental upheaval
A drone has crashed in the Chernobyl exclusion zone, causing a fire that has spread to 12 square kilometres of land. Dry weather, strong winds and the presence of land mines are complicating efforts to bring the blaze under control
Satellite measurements show that in the early 2010s sea level rise suddenly accelerated to a rate of 4.1 millimetres per year, possibly in response to an increase in the rate of global warming
How important is thinking about your breath for calming yourself down? We now know that slow breathing is effective even without conscious involvement
An impression made in clay around 175,000 years ago could be a kneeprint left by one of the builders of a strange stalagmite circle found deep inside Bruniquel cave in south-west France
A secret society of French mathematicians has been revolutionising the field of mathematics under a pseudonym for nearly a century. Columnist Jacob Aron finds that this mythic collective provided maths a rigorous and useful foundation, and did some real harm along the way
A comprehensive study exploring coffee’s physiological effects finds that some of its benefits are down to polyphenols and their influence on gut bacteria
A guide to walking, a look at the world’s Google searches and a deep dive into the secrets of our DNA are some of the topics tackled by the popular science books out this month