A problem that rendered as many as 10,000 U.S. military GPS receivers useless for days is a warning to safeguard a system that enemies would love to disrupt, a defense expert says.
Telecom
Jun 1, 2010
7
0
Tyrannosaurus rex, renowned for being one of the most fearsome creatures to have ever lived, evolved a bite that was less impressive in relation to its body size than a tiny Galapagos ground finch, scientists say.
Plants & Animals
Jan 9, 2019
0
164
If you've ever lost your balance standing on a bus that takes a sharp turn at speed or felt your car skid when you drive around a corner too fast, you've experienced the effects of centrifugal force. Turning while simultaneously ...
Plants & Animals
Nov 21, 2018
0
86
The world's fastest sprinters have unique gait features that account for their ability to achieve fast speeds, according to two new studies from Southern Methodist University, Dallas.
Other
Aug 26, 2014
0
5
While not primarily useful for telling the time, nuclear clocks could allow scientists to test humankind's fundamental understanding of how reality works.
Quantum Physics
Feb 27, 2023
0
34
Conjugated polymers are organic macromolecules that are characterized by a backbone chain of alternating double and single bonds. Their overlapping p-orbitals create a cloud of delocalised π-electrons, which can result in ...
Polymers
Oct 5, 2020
0
10
As the United States expands surveillance technologies on, above and below its 1,900-mile-long border with Mexico, operating them effectively grows more challenging.
Engineering
Jul 6, 2017
0
4
China's military has set up an elite Internet security task force tasked with fending off cyberattacks, state media reported Friday, denying that the initiative is intended to create a "hacker army".
Internet
May 27, 2011
0
0
Thousands of wildfires ignite in the U.S. each year, and each one requires firefighters to make quick decisions, often in difficult conditions like high winds and lightning.
Environment
Sep 6, 2021
0
12
Since its unwelcome arrival in Pennsylvania several years ago, the spotted lanternfly has been eating away at agricultural commodities, landscapes and the commonwealth's bottom line.
Ecology
Aug 10, 2020
0
7
