Potent greenhouse gas more prevalent than thought.

• Environmental activists were “suspected of involvement in terrorism.”

Toys containing banned substances are still on the market.

Reader support makes our work possible. Donate today to keep our climate news free. All donations TRIPLED!

Asian beetle threatens three New England industries.

Grist thanks its sponsors. Become one.

India shops for coal in Appalachia.

Must-see green American landmarks.

• Many mass transit systems plagued by too many riders.

Grist thanks its sponsors. Become one.