by Dr. Nalini Nadkarni, professor emerita of SBS


October 6, 2022
For forty years, I’ve documented the ecological values that trees provide, like stabilizing soils and providing wildlife habitat. And most importantly, trees absorb carbon into their tissues, a process that helps slow climate change. > Listen


Autumn Leaf Colors

October 13, 2022
The process of moving out the chlorophyll reveals the yellow and orange of other leaf pigments. They were there all along, just masked by the chlorophyll. > Listen


Why Apples?

October 20, 2022
Flowering plants — like apple trees — have evolved so that their seeds will land in the best place to flourish, the very definition of biological fitness. > Listen


The Wonder of Cork Oaks

October 28, 2022
People have used cork for millennia. It's light, buoyant, and elastic, thanks to the 40 million air cells that occupy each cubic inch. > Listen


The Body Language of Trees

November 3, 2022
On a recent walk in Liberty Park, I noticed an odd branch on a small maple tree that started growing horizontally but then took a sharp vertical turn. > Listen


Trees and Baseball

November 3, 2022
For decades, baseball bats used wood from ash trees to provide just the right feel for hitting homers. The density and loose grain of ash wood gives the bat a “trampoline” effect, producing a boost that can drive the ball further and faster. > Listen


Trees' Symbolic Power

November 17, 2022
Why do trees pop up on our flags, stamps and money? > Listen


Sycamore Trees

November 23, 2022
These trees thrive in city settings because of their rapid growth and tolerance of pollution. > Listen


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