Terahertz frequencies offer the unique feature of displaying things that in other frequency ranges such as the visible, microwave or X-ray, would be impossible. So they are able to image a ceramic weapon or a parcel bomb ...
Optics & Photonics
Aug 7, 2015
0
32
Atop Hawaii's Mauna Kea, where some Native Hawaiians have been peacefully protesting the construction of what would be one of the world's largest telescopes, astronomers have spent the past 40 years observing our universe ...
Space Exploration
Aug 7, 2015
0
12
As fierce competition leads to rapid innovation in the smartphone market, hackers have pounced on cracks in defenses of developments on devices at the heart of modern lifestyles, experts say.
Security
Aug 7, 2015
0
391
Philippine bush man Edward Serrano struck two rocks together and wrapped the faint spark in wood shavings, building a fire in much the same way Stone Age man must have done two million years ago.
Environment
Aug 7, 2015
0
19
A dive into a gun-loving side of US culture by a pair of computer security researchers led them to hack into a digitally-enhanced sniper rifle.
Security
Aug 7, 2015
2
79
Researchers have examined one of the smallest parts of the fossil record—theropod teeth—to shed light on the evolution of dinosaurs at the end of the Cretaceous. Findings published in the prestigious journal Acta Palaeontologica ...
Archaeology
Aug 7, 2015
0
685
