Interpreting human evolution -- Fact and fancy before 1860 -- Picture up to 1860 -- Hominid catastrophism -- Between world wars -- Recent discoveries -- Evolutionary principles -- Culture as an ...

The human genome is made up of 23 pairs of chromosomes, the biological blueprints that make humans … well, human. But it turns out that some of our DNA — about 8% — are the remnants of ancient viruses ...