Time Magazine: Once scientists began studying the impact of global warming on everything from tourism to asthma, it was only a matter of time before they got around to sex. Now two biologists at Spain’s Higher Council for Scientific Research (CSIC) have done just that, at least when it comes to fish. You may have missed it in biology class, but in some finned species like the Atlantic silverside – as well as in many reptiles – sex is determined not by genetics, but by temperature: the …