NPR News: This week in science: T. rex footprints, solar 'superflares,' and benefits of reading

This week in science: T. rex footprints, solar 'superflares,' and benefits of reading
Paleontologists have discovered the tracks of a giant — the fossilized footprints of T. rex. Plus, solar "superflares" and the brain benefits of reading in this week's Short Wave science news roundup.

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