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Science writer Poppick explains what those millions of strata can tell us about four instances that changed life dramatically, from oxygen entering the atmosphere all the way to the dinosaur era.

It’s easy to see why Chishiya has such a magnetic appeal at the close of a year when audiences obsessed over stories of con artists infiltrating society’s most exclusive strata.

They seemed unbeatable — until good people from all strata of society rose up.

For one, the migrants are not from the lowest economic strata.

But that is the brutal nature of professional golf in the strata below those chasing major titles and Ryder Cup berths.