In 1967, scientists found the pesticide DDT was thinning eagle and falcon eggshells until they cracked: After the US banned it in 1972, bald eagles and peregrines came roaring back
· Times of India
Source Summary
Science News: By the 1950s and 1960s, biologists across North America were reporting an unusual pattern in the nests of bald eagles, peregrine falcons and several o.
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