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China’s skies are briefly clearer while factories stay shut

China’s far-reaching efforts to control the spread of the new coronavirus have shuttered factories, emptied airports and resulted in a steep drop in carbon emissions and other pollutants. However, analysts caution that the dip in pollution is likely temporary.

How a small stretch of ocean stirred a conservation movement

Following the lead of the U.S., other nations have designated marine sanctuaries and protected areas, which now cover about 6% of the world’s oceans — a bonanza for researchers but, more importantly, an important tool for safeguarding the seas.

China aims to build its own Yellowstone on Tibetan plateau

There’s a building boom on the Tibetan plateau, one of the world’s last remote places. The Chinese government wants to set limits on the region’s growth in order to design its own version of one of the U.S.’s proudest legacies — a national park system.

Modeling the Structure of DNA

In this activity, students build a paper model of DNA and use their model to explore key structural features of the DNA double helix. This activity can be used to complement the short film The Double Helix.

Bringing the world's buried wetlands back from the dead

In the wetlands of eastern England, a motley team of farmers, university researchers and conservationists is digging into the region’s barley and wheat fields to turn back the clock. They seek out patches of muddy earth that hint at lost ponds lurking beneath.

Nutrient Cycling in the Serengeti

In this activity, students engage with an example from the Serengeti ecosystem to illustrate the exchange of nutrients between plants, animals, and the environment.