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...systems (which can be difficult to assess) and the number of individuals of a particular species or broader group that exist in total. Mammals have also been around for a long time; LoM [p. 14] mentions the shrew-like 200-million-year-old fossil named Megazostrodon. Rather than shuffling along, with splayed-out limbs in the manner of many reptiles, this animal had limbs...

...systems not directly controlled by individual consumers. But from an individual’s or householder’s perspective, all home energy use, including electricity, and all transport, including travel by public transport and air, may more logically be viewed as emissions arising directly from their actions. Meanwhile emissions from the production and supply of food and all...

...system where you prepare for the eventual day when an asteroid is on a collision course, but that would be extremely expensive and no government is willing to spend that much money on that. RH: So around that sort of time I met John Houghton, who went on to become Head of the Intergovernmental Panel on Climate Change Science Working Group and he was also struggling with...