Neanderthals built mysterious cave structures 175,000 years ago -- and no one knows why

Mysterious structures found deep inside a French cave are the work of Neanderthal builders who lived in the region more than 100,000 years before modern humans set foot in Europe.

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Giving flu vaccinations earlier in the day can save thousands of lives: researchers

Older patients given flu vaccinations in the morning rather than the afternoon produced more antibodies to fight seasonal virus strains, say researchers

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LSD's impact on the brain revealed in groundbreaking images

The profound impact of LSD on the brain has been laid bare by the first modern scans of people high on the drug.

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Stephen Hawking: The most dangerous threats to humans now come from science and technology

The human race faces one its most dangerous centuries yet as progress in science and technology becomes an ever greater threat to our existence, Stephen Hawking warns.

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Scientists try to stay grounded amid rumors that gravitational waves were discovered

Cosmologist tweet appears to confirm rumors of possible discovery that could ‘open a new window on the universe’

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Water on Mars and landing on comets: 2015 was a good year in space exploration

When the Soyuz rocket carrying Britain’s Tim Peake blasted off from Baikonur cosmodrome in Kazakhstan this month, he took much of the nation with him . He is not the first British astronaut and not even the first from Sussex , but he is the only one ever admitted to the European astronaut corps . That makes a difference. As a career astronaut for the European Space Agency, Peake is uniquely placed to inspire British children for many years to come. The launch was a historic moment, but far from the only highlight of 2015.

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High-strength marijuana may damage brain fibers -- but not the less potent stuff

High-strength cannabis may damage nerve fibres that handle the flow of messages across the two halves of the brain, scientists claim. Brain scans of people who regularly smoked strong skunk-like cannabis revealed subtle differences in the white matter that connects the left and right hemispheres and carries signals from one side of the brain to the other.

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This is how the world will end -- according to NASA

Earth’s final days are in the distant future, but the the death of a far-off solar system revealed in images from Kepler 2 shows how the world might end

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Probiotic bacteria may aid against anxiety and memory problems

A daily capsule of probiotic bacteria may help people cope with mild anxiety and memory problems, according to a small study of healthy men.

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'Stunning' discovery: 125-million-year-old mammal remains found with visible fur, skin, and organs

Spinolestes xenarthrosus’s 125m-year-old remains, found in Cuenca, Spain, with earlobe, lung, liver and furry pelt, is 60m years older any other mammal found with soft tissues preserved

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NASA scientist: 'There is liquid water today on the surface of Mars'

Liquid water runs down canyons and crater walls over the summer months on Mars, according to researchers who say the discovery raises the odds of the planet being home to some form of life.

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Paraplegic man walks again with own legs

American man, 26, completes 3.5-metre course thanks to computer system that reroutes signals from his brain to electrodes on his knees

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Schrödinger's microbe: Physicists plan to put living organism in two places at once

Physicists have drawn up plans to put a living organism in two places at once in a radical demonstration of quantum theory.

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Homo naledi: New species of ancient human discovered, claim scientists

Homo naledi, a new species of ancient human relative, say researchers, but some experts are sceptical of find

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Researchers push for ethical debate on editing genomes to prevent disease

Wellcome Trust, Medical Research Council and others call for debate on potential of altering DNA to prevent diseases -- and risk of ‘designer babies’

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