News tagged with levels

Anti-counterfeit polymers work like fingerprints

(Phys.org)—When it comes to tagging items to prove their authenticity, the goal is to stay ahead of counterfeit technology. The best tags are unique, complex, easy to read, and difficult to reproduce. ...

Feb 16, 2015 report
4.4 / 5 (15) 0

Baby sea turtles starved of oxygen by beach microbes

On a small stretch of beach at Ostional in Costa Rica, hundreds of thousands of sea turtles nest simultaneously in events known as arribadas. Because there are so many eggs in the sand, nesting females freque ...

Feb 26, 2015
3 / 5 (2) 0

Via laser into the past of the oceans

Next to global warming, ocean acidification is currently considered as the second major carbon dioxide problem. With the increase of carbon dioxide (CO2) in the atmosphere larger quantities of the gas are getting into the ...

Feb 23, 2015
3.8 / 5 (8) 2

Scientists bring oxygen back to dead fjord

More and more of the world's waters are seriously lacking oxygen. Could we use pumps to bring oxygen and thus higher life back into these waters? A Danish/Swedish research team says yes. They installed pumps ...

Feb 23, 2015
4.5 / 5 (12) 1

Iconic graph at center of climate debate

The "Hockey Stick" graph, a simple plot representing temperature over time, led to the center of the larger debate on climate change, and skewed the trajectory of at least one researcher, according to Michael ...

Feb 14, 2015
3.2 / 5 (125) 189