“About 250 million years ago, most of the continental plates were joined into a supercontinent, which Wegener had christened “Pangaea.” It was… — David Christian Copy Share Image
Humans are remarkable: the first species in almost four billion years of life on earth that dominates the biosphere. This gives us… — David Christian Copy Share Image
“as Joel Mokyr has argued, technological innovation is unlikely to happen quickly where those who work lack wealth, education, and prestige, and… — David Christian Education Copy Share Image
You go to the cosmologists and ask how they tell the history of the universe; you go to the geologists, how do… — David Christian Copy Share Image
I have this fantasy that in future negotiations over climate change - instead of going into that room and saying, 'I'm defending… — David Christian Change Copy Share Image
When very large stars die, they create temperatures so high that protons begin to fuse in all sorts of exotic combinations, to… — David Christian Copy Share Image
