Feb. 1, 2022

Tue. 02/01 - 2,500 Subway Cars Under the Sea

The New York City subway cars taking on a second job on the ocean floor. Plus, a successful drone created using Leonardo da Vinci’s aerial screw design. And crows in Sweden are being trained to pick up litter.

The New York City subway cars taking on a second job on the ocean floor. Plus, a successful drone created using Leonardo da Vinci’s aerial screw design. And crows in Sweden are being trained to pick up litter.

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