Physicist proves impossibility of quantum time crystals

(Phys.org) —Is it possible that a moving object could have zero energy? The common sense answer is no, since motion itself is kinetic energy, but this answer has been challenged recently by the concept of quantum time crystals. ...

Ancient die-off greater than the dinosaur extinction

Clues from Canadian rocks formed billions of year ago reveal a previously unknown loss of life even greater than that of the mass extinction of the dinosaurs 65 million years ago, when Earth lost nearly three-quarters of ...

'Rosetta Stone' of supervolcanoes discovered in Italian Alps

Scientists have found the "Rosetta Stone" of supervolcanoes, those giant pockmarks in the Earth's surface produced by rare and massive explosive eruptions that rank among nature's most violent events. The eruptions produce ...

Church unearthed in Israel may hold Zechariah tomb

Israeli archaeologists unveiled on Wednesday the remnants of a newly discovered Byzantine-era church they suspect is concealing the tomb of the biblical prophet Zechariah.

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