Fatherhood lowers testosterone: Ingeneous, Mr Evolution!

Cross-species comparisons suggest that if paternal care is indeed an evolved behavior in humans, men’s biology would likely accommodate the transition to fatherhood/caregiving in specific ways, including changes in testosterone.

http://blogs.plos.org/neuroanthropology/2011/12/14/on-testosterone-and-real-men-an-interview-with-lee-gettler/

The Real Global Warming Signal

Foster & Rahmstorf compare five different 30 year global temperature records and use a regression to remove most of the effect three big interfering variables: the el Nino southern oscillation, atmospheric aerosols (mostly from volcanic eruptions), and variations in solar energy received by the earth.  The temperature records use different source data sets and measure somewhat different things, eg, surface v lower atmosphere temperature.

The result:

http://tamino.wordpress.com/2011/12/06/the-real-global-warming-signal/

Bitcoin, libertarianism v the real world

A young bitcoiner, The Real Plato, brought On the Road into the new millennium by video-blogging a cross-country car trip during which he spent only bitcoins.

The Rise and Fall of Bitcoin
http://www.wired.com/magazine/2011/11/mf_bitcoin/