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Peptide induces chirality evolution in a single gold nanoparticle

For the first time, scientists have successfully created optically active, chiral gold nanoparticles using amino acids and peptides. Many chemicals significant to life have mirror-image twins (left-handed and right-handed structures), a characteristic that is conventionally called chirality. This study describes how chirality, which is typically observed in organic molecules, can ...

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Trouble Detected in Infamous Dark Matter Signal

For 20 years, an experiment in Italy known as DAMA has detected an oscillating signal that could be coming from dark matter—the fog of invisible particles that ostensibly fill the cosmos, sculpting everything else with their gravity. Quanta Magazine About Original story reprinted with permission from Quanta Magazine, an editorially ...

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Can we tell black holes apart?

One of the most fundamental predictions of Einstein’s theory of relativity is the existence of black holes. In spite of the recent detection of gravitational waves from binary black holes by LIGO, direct evidence using electromagnetic waves remains elusive and astronomers are searching for it with radio telescopes. Astrophysicists at ...

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Consuming more than five drinks a week could shorten your life

Regularly drinking more than the recommended UK guidelines for alcohol could take years off your life, according to new research from the University of Cambridge. Part-funded by the British Heart Foundation, the study shows that drinking more alcohol is associated with a higher risk of stroke, fatal aneurysm, heart failure ...

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Extremely fast dives help peregrine falcons maneuver to catch agile prey

Computer simulations of peregrine falcon attacks show that the extreme speeds reached during dives from high altitudes enhance the raptors’ ability to execute maneuvers needed to nab agile prey that would otherwise escape. Robin Mills and colleagues of the University of Groningen, Netherlands, and Oxford University, UK, report this discovery ...

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