The current Meghalayan Age began 4,200 years ago and runs to this very day. Each division in the International Chronostratigraphic Chart corresponds to some distinctive change in the strata of Earth.

Informally, people talk about our current age as the Anthropocene, melding humans with the lingo of geologic time. And now, there’s a new age with a new name — the Meghalayan.

The International Chronostratigraphic Chart has officially been revised. That means our current point in Earth’s geological timeline has been updated so that we’re now living in the Meghalayan ...