Nature goes to extremes: human intelligence+testosterone, Nature's most evolved extreme. Neither the Alberta tar sands nor the Tsar bomba (the largest detonation ever achieved - up to 57 kilotons of explosive power ) could have happened without human intelligence with a healthy sprinkling of testosterone. For a more telling experience of the lunacy of tsar bomba, have a look at one of the videos available on YouTube: https://www.youtube.com/watch?v=WwlNPhn64TA The following article is excellent as well: http://nuclearweaponarchive.org/Russia/TsarBomba.html