Improving geothermal energy

Generating electricity from the hot rocks deep underground is clean, safe and renewable - and it's about to take a step forward in Utah.

How to thermally cloak an object

Can you feel the heat? To a thermal camera, which measures infrared radiation, the heat that we can feel is visible, like the heat of a traveler in an airport with a fever or the cold of a leaky window or door in the winter.

Visualizing the Aztecs

(PhysOrg.com) -- Anyone who has visited the ancient ruins of great civilizations can appreciate the difficulty of visualizing the buildings at their peak. Today's visitor to the British Museum can see structures of the Aztecs, ...

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