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Climate Change

A collage shows a scientist using a pipet as well as various polymers and natural materials.
Technology

Toward truly compostable plastic

Materials scientists are cooking up environmentally friendly polymers from natural sources like silk, plant fibers and whole algae. Economics and acceptance remain hurdles.

Satellite image of delta of the Mississippi River. You can see the river snaking to the Gulf of Mexico. The gulf’s waters are colored shades of dark and light blue. Land around the delta is in many hues of yellow, mustard, brown, blue and pink.
Physical World

Is this ‘age of the delta’ coming to an end?

The wet landmasses, though inherently impermanent, have been essential to both people and wildlife for thousands of years. But recent shifts have brought on some rapid losses that worry scientists.

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