3 ms·
One plausible explanation is that birth and childhood have become much less dangerous. Before 1900, children with poor genes died; since 1900, children with poo
by sandspar 1y ago
One plausible explanation is that birth and childhood have become much less dangerous. Before 1900, children with poor genes died; since 1900, children with poor genes survive and have children of their own.
- rixed 1y agoMy understanding of high child mortality rates in the past is that it has little to do with genetics, and more to do with infectious diseases and poor hygiene.