(PhysOrg.com) -- When trying to focus sound waves into as small an area as possible, scientists run into a fundamental limit called the diffraction limit. That is, when sound waves are focused into a region smaller than one ...
In the northeast of the Iberian Peninsula, between the third and second millennium BC, a widespread funeral practice consisted in burying humans with animals. Scientists have discovered that both foxes and dogs were domesticated, ...
Archaeology
Feb 22, 2019
2
1404
(Phys.org)—In 2011, scientists from the Institute Langevin in Paris built an array of 49 empty coke cans that resonate when exposed to an acoustic wave, causing the cans to produce sound similar to the way blowing across ...
People are increasingly aware of the harm plastic waste causes to wildlife, and many would avoid buying single-use plastics if they could help it. But are the alternatives to plastic much better?
Environment
Nov 17, 2020
1
26
Canadian craft brewers are facing a sudden aluminum can shortage and are blaming the supply disruptions on aluminum tariffs, making these small businesses among the first casualties of the Canada-US trade spat.
Business
Aug 5, 2018
5
44
Seeking to turn an environmental problem into an economic opportunity, high-tech companies in resource-poor Japan are mining mountains of toxic e-waste for precious materials.
Environment
Dec 17, 2009
0
0
Findings from a University of Alberta researcher shed new light on what may be stopping people from recycling more.
Environment
Aug 22, 2013
15
0
Nepal's tourism ministry said Friday it plans to exercise tighter control of climbers scaling Mount Everest to make sure they keep the world's highest peak clean and to prevent rows.
Environment
Aug 2, 2013
0
0
Producing pure aluminium from ore accounts for as much as 1 per cent of all greenhouse gas emissions worldwide. Recycling is the best way to reduce that carbon footprint – but manufacturers and recycling companies will ...
Engineering
May 1, 2015
2
39
Earth's protective ozone layer is beginning to recover, largely because of the phase-out since the 1980s of certain chemicals used in refrigerants and aerosol cans, a U.N. scientific panel reported Wednesday in a rare piece ...
Earth Sciences
Sep 10, 2014
1
1
