Concerns grow over tainted sewage sludge spread on croplands

For more than 20 years, the eastern Michigan town of Lapeer sent leftover sludge from its sewage treatment plant to area farms, supplying them with high-quality, free fertilizer while avoiding the expense of disposal elsewhere.

Flame retardants—from plants

Flame retardants are present in thousands of everyday items, from clothing to furniture to electronics. Although these substances can help prevent fire-related injuries and deaths, they could have harmful effects on human ...

Researchers convert CO to CO2 with a single metal atom

Researchers from Washington State University and Tufts University have demonstrated for the first time that a single metal atom can act as a catalyst in converting carbon monoxide into carbon dioxide, a chemical reaction ...

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