Rare Minerals Supplies: No Need for Panic

(PhysOrg.com) -- Alarming media reports have raised concern about U.S. dependence on foreign sources of rare minerals that are critically important in military applications and emerging industries. But there is no need to ...

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.

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