A rare sandstone spirit reveals the private faith of Rome’s northern frontier.
The culprit may have been an unusually dry relic from the outer solar system.
This bizarre mechanical computer has no wires or chips.
An experimental aircraft uses motion blur to become a faint haze in flight.
Elephants may hear messages traveling through the ground from more than 10 kilometers away, thanks to massive ear bones and a muscle that can shut their ear canals.
Plastic pollution may ripple downstream, threatening the human and wildlife communities that depend on glacier-fed waters.
From ants to apes, social species scout, bond, raid and retreat before conflict. 
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