Tracking weeds to stop them in their tracks

Not that long ago, weeds spread at a much slower rate. Seeds would spread to nearby soil and move perhaps a few feet each year or would be transplanted by birds who flew with them several miles away. In today's interconnected ...

Coral reefs provide stunning images of a world under assault

Humans don't know what they're missing under the surface of a busy shipping channel in the "cruise capital of the world." Just below the keels of massive ships, an underwater camera provides a live feed from another world, ...

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