Economy & Business

Evidence Showing Threat Posed by Medusahead Grows

This invasive grass that already has a grip on about 2 million acres in the West makes the rangeland it invades virtually worthless for grazing, harms many animals that contact it or try to eat it, increases wildfire risk, and creates monocultures that have very low biodiversity and crowd out numerous native plant and animal species.

Can Environment Sustain Quest for Valuable "Rare Earth" Materials?

A US Geological Survey report offers a perspective on the global situation and an assessment of known US deposits. There may be about 13 million metric tons available in 14 states — with the sites generally posing the usual environmental challenges associated with mining and refining.

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