Page 3.14

Archives for May, 2013

Beyond 400 PPM

The threshold of 400 carbon dioxide molecules per million molecules of Earth’s atmosphere is an arbitrary but still significant milestone, reflecting a near 50% increase in the concentration of the greenhouse gas since humanity first started burning fossil fuels for industry. Sure, the Earth has experienced hotter chemistry before, but Peter Gleick says it all…

Last week the European Union voted to ban neonicotinoid pesticides in an effort to fight colony collapse disorder among honeybees.  Although research has clearly fingered these pesticides in bee behavioral problems, the ban is still rather speculative, as multiple environmental factors may be at play in CCD.  Greg Laden writes “navigation over long distances, communicating…

Ruled by Relativity

Walking on two legs, time and space seem universal, but take a good look at the universe, and things start to get mushy. Chad Orzel defines time with a circular-sounding title, writing “there isn’t a giant master clock at the center of the universe that everybody sets their watches by.” Although time can only be…