Dinosaur tracks make fresh impression at Valley Forge park

The national park on the site where George Washington and the struggling Continental Army endured a tough winter during the American Revolution boasts a new feature that's a couple of hundred million years old—dozens of ...

China fights big smog with big air purifier

China has a found a novel way to tackle its massive air pollution problem: Putting up a giant air purifier the size of an industrial smokestack in the middle of a smog-plagued city.

A magnetar just woke up after three years of silence

When stars reach the end of their main sequence, they undergo a gravitational collapse, ejecting their outermost layers in a supernova explosion. What remains afterward is a dense, spinning core primarily made up of neutrons ...

Researchers defy the limits of streaming

Given the growing number of users and the widening range of devices, streaming is no longer viable in its current form owing to the substantial amount of power and storage capacity it requires. But researchers at EPFL's Embedded ...

Indonesia raises Bali volcano alert to highest level

Indonesian authorities have raised the alert level for the Mount Agung volcano on the tourist island of Bali to the highest level, and some 10,000 villagers have left their homes around the mountain, officials said Friday.

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