How does a spider weave its web?

Emily Setton removes the lid from a small, plastic dish on her lab bench. Within the clear, rectangular plate are half-circle wells containing hundreds of round beads about the color and size of couscous—the large kind.

From ground to orbit, sensors check air to improve quality

From high-profile wildfires in the American West over the last several years, to visibly cleaner air during pandemic slowdowns, air quality is returning to the forefront of environmental concern. The air we breathe has direct ...

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