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Bugs versus Water Hyacinth
California has released 2,225 starving South American water hyacinth “plant hoppers” into the delta to help battle this invasive aquatic plant. The bugs will descend on the floating mats of water hyacinth and suck out the juices until the plants wither and die.

Traditionally chemicals have been used to defeat the water hyacinth, but treatment hasn’t even begun this summer as the department is waiting for permits. The insects may well be better for the environment than chemicals, but could these little critters themselves become a nuisance in the future?

Water hyacinth is a serious problem, the aquatic plant forms dense mats that entangles boats, frustrates fishermen, invades intake pipes, damages pumps, and wreaks havoc on the delta’s ecosystem.

 
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Hydrologists Blame Toxin Used to Kill Fish for Parkinson's Diagnoses - The U.S. Environmental Protection Agency had asked manufacturers to voluntarily cancel the use of rotenone as a pesticide in homes and for agriculture, where it had been used as an insecticide and piscicide (fish killer) since 1947. Rotenone’s safety for humans has, in fact, been called into question since the mid-’70s.


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