((brightlines_include)) A review of recent climate science findings finds that Jim Hansen's bright-line standard and timeframe for global action [1.0ºC limit on further increase in global temperature / 475 ppm cap on atmospheric carbon with <10 years for global action] is, if anything, not conservative enough. A rash of recent reports identify major climate forcings wholly unaccounted for in IPCC models -- such as a five-fold increase in methane releases from Si ...