The most recent one is thought to have occurred more on the timescale of a human lifetime. https://en.wikipedia.org/wiki/Brunhes%E2%80%93Matuyama_reversal http

The most recent one is thought to have occurred more on the timescale of a human lifetime. https://en.wikipedia.org/wiki/Brunhes%E2%80%93Matuyama_reversal https://en.wikipedia.org/wiki/Brunhes%E2%80%93Matuyama_rever...