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A final blow to myth of how people arrived in the Americas

Is there any way the first Americans migrated south along the Pacific coast through an ice-free corridor? No, say scientists.<p>For decades, …

Anthropology

3tags.org

Solar cell mystery solved, expected to greatly increase efficiency

(Phys.org)—For the past 17 years, spiro-OMeTAD, has been keeping a secret. Despite intense research efforts, its performance as the most commonly …

Solar Panels

Ancient virus could determine the sex of your baby

(NEWSER) – The sex of baby mice—and quite likely baby humans—is determined by a virus that inserted itself into the mammalian genome 1.5 million years ago, <i>Live Science</i> reports.<p>Yale researchers published their surprising findings this week in <i>Nature.</i> According to a press release, more than 40% of the …

Genetics

Long term vegetarian diet changes human DNA raising risk of cancer and heart disease

Long term vegetarianism can lead to genetic mutations which raise the risk of heart disease and cancer, scientists have found.<p>Populations who have had a primarily vegetarian diet for generations were found to be far more likely to carry DNA which makes them susceptible to inflammation.<p>Scientists in …

Genetics

The science behind a good cup of coffee

Here’s the data behind making a healthy, flavorful cup of joe—from beans to brew<p>Coffee is one of the most popular drinks worldwide, with countless …

Coffee

Scientists find evidence of mathematical structures in classic books

Researchers at Poland’s Institute of Nuclear Physics found complex ‘fractal’ patterning of sentences in literature, particularly in James Joyce’s Finnegans Wake, which resemble ‘ideal’ maths seen in nature<p>James Joyce’s Finnegans Wake has been described as many things, from a masterpiece to …

Literature

This physicist has a groundbreaking idea about why life exists

Why does life exist?<p>Popular hypotheses credit a primordial soup, a bolt of lightning, and a colossal stroke of luck.<p>But if a provocative new theory is correct, luck may have little to do with it. Instead, according to the physicist proposing the idea, the origin and subsequent evolution of life …

Physics

A Star-Crossed 'Scientific Fact': The Story Of Vulcan, Planet That Never Was

There's a common misconception that science is purely about cold, hard facts — concrete evidence, mathematical models and replicable experiments to explain the world around us.<p>It's easy to forget that there are peoplebehind the data and equations. And when people are involved, there is always room …

Physics

Abruptly Warming Climate Triggered Megabeast Revolutions

Around 34,000 years ago, woolly mammoths went extinct from parts of Europe, only to be replaced by… woolly mammoths. The two groups—the disappearing individuals and their substitutes—belonged to the same species. If you looked at their fossils, you probably couldn’t tell them apart. Their genes, …

Climate Change

A Convincing Theory About Human Evolution

No ape had done that before.<p>It was an important milestone in the story of human evolution.<p>The ancestor in question, Homo erectus, could use simple tools and hunt. His diet was more meat-based than plant-based. Meat has more calories than food derived from plants. Humans had transformed themselves …

Why Some Mushrooms May Be Magic for Climate Change

Fungi don’t get the respect they deserve. Maybe that’s because they do most of their work in the dark, beneath the ground or on dead matter, or …