15/03/2016

Detecting radioactive material from a remote distance

In 2004 British national Dhiren Barot was arrested for conspiring to commit a public nuisance by the use of radioactive materials, among other charges. Authorities claimed that Barot had researched the production of "dirty ...

Sharkskin actually increases drag

On an intuitive level, you'd expect a shark's skin to reduce drag. After all, the purpose of sharkskin-inspired riblets—the micro-grooved structures found in aircraft wings, wind turbine blades and Olympic-class swimsuits—is ...

Oil and natural gas boom causes methane emissions to increase

Like carbon dioxide, methane is one of the most important greenhouse gases. After a period of stagnation around 2000, atmospheric methane concentrations started to rise again in 2007. So far, the causes have been unknown. ...

Fairy circles found in Australian outback

(Phys.org)—A small team of researchers from Germany, Israel and Australia has confirmed that fairy circles exist in a part of the Australian outback. In their paper published in Proceedings of the National Academy of Sciences, ...

Female frogs identify own offspring using inner GPS

The ability to recognize own offspring and provide preferential care is difficult for the poison frog Allobates femoralis. According to a study conducted by Vetmeduni Vienna, male and female frogs have different strategies ...

page 5 from 11