Terahertz Image Reveals Goya's Hidden Signature in Old Master Painting
Darkened varnish obscures Goya's signature in a 1771 masterpiece, according to a new analysis using terahertz waves
Materials
Novel Material Shows Promise for Extracting Uranium from Seawater
A so-called metal-organic framework could offer a better way to get at the vast uranium resource dissolved in the ocean.
Can Carbon Capture Clean Up Canada’s Oil Sands?
Alberta will serve as a test bed for large-scale carbon capture and sequestration.
US Air Force Measures Potato Cannon Muzzle Velocities
Ever wondered what fuel fires potatoes out of a cannon the fastest? The US Air Force now has the answer
A 3-D Printed Gun
With 3-D printing poised to go mainstream, will we soon all be able to print a gun?
First Tunguska Meteorite Fragments Discovered
Nobody knows what exploded over Siberia in 1908, but the discovery of the first fragments could finally solve the mystery.
How a Cheap Plastic Film Can Give Your Smartphone a 3-D Screen
A plastic smartphone screen cover patterned with tiny lenses could help mobile 3-D take off.
Simple Trick Turns Commercial Polymer Into World's Toughest Fiber
A materials scientist has created the world's toughest fiber using a mechanism based on a slip knot.
Battery Could Provide a Cheap Way to Store Solar Power
Combining aspects of high-energy lithium-sulfur batteries with flow battery technology can lower costs.
Nanoscale Pressure Sensors Mimic Human Skin
New research shows how arrays of tiny electronic devices can achieve human-skin-like sensitivity to mechanical force.
