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NOAA

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NOAA

A tiny garden in Boulder is showing signs of stress from smog. The scientist behind it is thrilled.

Four types of plants growing near the entrance to NCAR are part of a nationwide network of gardens where citizen scientists and climate researchers collect data about the impact of ground-level ozone

Environment

50,000 old photos in Golden are helping scientists answer new questions about climate change

American Alpine Club library's archive of images by early mountaineers holds clues for researchers documenting the retreat of glaciers worldwide

Outdoors