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In reply to the discussion: 52 Congress members sign letter warning of GMOs killing monarch butterflies (March 18, 2015) [View all]Bluenorthwest
(45,319 posts)the study itself.
"Agriculture giant Monsanto's signature herbicide has nearly eradicated the monarch butterfly, according to a Center for Food Safety study.
The study, released Thursday, found Monsantos herbicide glyphosate that is being sprayed on genetically engineered, herbicide-resistant corn and soybeans known as Roundup Ready crops are killing the monarch butterflys habitat and milkweed, the monarch caterpillars main food source.
Monsantos product, sold under the name Roundup, is unlike other weed killers in that is moves internally to the root tissue once its absorbed, not only killing but preventing regeneration of the milkweed."
http://thehill.com/regulation/231893-ag-companys-signature-herbicide-linked-to-monarch-butterfly-decline-study-says
MONARCHS IN PERIL
HERBICIDE RESISTANT CROPS AND THE DECLINE OF
MONARCH BUTTERFLIES IN NORTH AMERICA
http://www.centerforfoodsafety.org/files/cfs-monarch-report_2-4-15_design_05341.pdf