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Top storyAncient DNA evidence narrows down when people first reached the Americas phys.org · 31m ago

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Ancient DNA evidence narrows down when people first reached the Americas

One of the unresolved mysteries about the history of the Americas is when the first people arrived. Despite extensive debate centering on genetic, archaeological and environmental evidence, there is still no consensus or conclusive proof. Did they enter before, during or after th

Brief phys.org · 31m ago
A health app designed for teachers

A new app is designed to help teachers stay healthy in their day-to-day work. The digital tool is the result of a three-year collaborative project between the Technical University of Munich (TUM) and health insurance provider AOK Bayern.

Brief phys.org · 1h ago
Quantum systems never quite forget where they came from

Even the most chaotic quantum systems keep a permanent mark of their own past—a "quantum birthmark"—that never fades. Researchers from Tampere University, Harvard University and TU Dresden discovered the feature in their recent study. Their findings shed new light on the elusive

Brief phys.org · 2h ago
A novel path to fusion ignition: Heat first, then add fuel

For more than 70 years, fusion energy researchers have used a particular equation to judge whether a plasma would stay hot and dense enough—for long enough—to reach a point where it could sustain itself without any more external power added. While that equation marks the finish l

Brief phys.org · 2h ago
Why Great Plains rivers depend on wetlands as well as climate

When a prairie river carries more water in one year than another, the obvious place to look for an explanation is the sky. A year with more snow and rain should have more water in rivers. That was also how I initially thought about year-to-year changes in river flow. But while st

Brief phys.org · 4h ago
Pollen study reveals the hidden history of grasses

Scientists used machine learning and super-resolution microscopy to overcome a challenge that has stymied research into the natural history of grasses for decades. Their method allowed them to detect subtle differences among grass pollen grains and trace changes in grass diversit

Brief phys.org · 4h ago

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Ancient DNA evidence narrows down when people first reached the Americas

One of the unresolved mysteries about the history of the Americas is when the first people arrived. Despite extensive debate centering on genetic, archaeological and environmental evidence, there is still no consensus or conclusive proof. Did they enter before, during or after th

phys.org · 31m ago
Standard 3D printers let labs build and adapt tools for bacterial research

Studying microorganisms requires instruments with extremely high precision. Such instruments are expensive and take a long time to manufacture using traditional methods, which has slowed progress in the field. It has also been difficult for the biologists who use these instrument

phys.org · 31m ago
A health app designed for teachers

A new app is designed to help teachers stay healthy in their day-to-day work. The digital tool is the result of a three-year collaborative project between the Technical University of Munich (TUM) and health insurance provider AOK Bayern.

phys.org · 1h ago
Atomic motion could help push solar cells beyond conventional limits

The bulk photovoltaic effect (BPVE), a photoelectric effect that generates photocurrent without a p–n junction, can persist even when a material's average crystal structure remains centrosymmetric, a study from Institute of Science Tokyo has found. Researchers demonstrated this i

phys.org · 1h ago
Quantum systems never quite forget where they came from

Even the most chaotic quantum systems keep a permanent mark of their own past—a "quantum birthmark"—that never fades. Researchers from Tampere University, Harvard University and TU Dresden discovered the feature in their recent study. Their findings shed new light on the elusive

phys.org · 2h ago
Unmowed strips attract insects, but many abandon partially mowed dikes

Municipalities are increasingly mowing dikes and verges in stages, so that insects can make longer use of the plants growing there. Mowing is essential to keep a dike strong, explains ecologist Constant Swinkels of Radboud University. "If you don't mow, trees or sturdy shrubs suc

phys.org · 2h ago
A novel path to fusion ignition: Heat first, then add fuel

For more than 70 years, fusion energy researchers have used a particular equation to judge whether a plasma would stay hot and dense enough—for long enough—to reach a point where it could sustain itself without any more external power added. While that equation marks the finish l

phys.org · 2h ago

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