Seabirds ingest large quantities of pollutants—some of which have been banned for decades—liver analyses reveal‎

In her 1962 book, "Silent Spring," American biologist Rachel Carson revealed that DDT, a widely used pesticide at the time, was responsible for the mass death of birds, including the iconic bald eagle. One reason was that the pesticide made eggshells thinner, causing mothers to break them when sitting on them to incubate. Silent Spring is considered the founding work of the modern environmental movement.