World faces months of exceptional heat as El Nino intensifies, UN warns

Volunteer.

Both individuals denied the allegations.

"I take full responsibility for what I did and the hurt I caused", he wrote in a letter to staff.

MEXICO CITY/WASHINGTON, Nov 9 - For decades, planes dropped billions of factory-bred sterile flies to keep the flesh-eating New World screwworm out of North America’s cattle. That controls the pest because sterile males mate with wild females – whose eggs then fail to hatch.