US to reimpose limits on power plants' mercury emissions

The US government announced Monday it wants to revive a regulation limiting air emissions of mercury and other toxic substances from fossil fuel-fired power plants that had been undermined by the previous administration.

Florida surpasses a grim milestone: One thousand dead manatees

Since July, every weekly update from state wildlife officials has set a new record for the most manatee deaths counted in a single year. On Wednesday, Florida crossed an especially tragic threshold: More than 1,000 manatees ...

Pest attack-order changes plant defenses

The dining time of different insects impacts a plant's defenses and nutritional quality—a complexity uncovered in new research with implications for pest management strategies.

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