Why Tropical Trees Don’t Have Rings | Kirk Johnson cover art

Why Tropical Trees Don’t Have Rings | Kirk Johnson

Why Tropical Trees Don’t Have Rings | Kirk Johnson

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Growth rings on trees can measure time, allowing scientists to date things from the deep past. But, paleobotantist Dr. Kirk Johnson explains why, in the tropics, some trees have no rings.

For more, check out the extended interview with Kirk Johnson.

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