Charles Broley, a naturalist studying birds, realized that they were displaying irregular dating and nesting behavior. He also noticed they were experiencing a decrease in birth rates, especially among bald eagles. Researched showed that DDT and its metabolites negatively affected male embryos and made bird eggshells thin. According to research discussed in the video Fooling with Nature, baby birds exposed to endocrine disruptors did not develop eyes and alligators experienced shortened penises. Some still argue that if we want to know the real effects in regards to humans, humans should be studied, not animals. Rachel Carsen, the author of Silent Spring discussed these findings leading to a new age environmental movement (Patisaul,
Charles Broley, a naturalist studying birds, realized that they were displaying irregular dating and nesting behavior. He also noticed they were experiencing a decrease in birth rates, especially among bald eagles. Researched showed that DDT and its metabolites negatively affected male embryos and made bird eggshells thin. According to research discussed in the video Fooling with Nature, baby birds exposed to endocrine disruptors did not develop eyes and alligators experienced shortened penises. Some still argue that if we want to know the real effects in regards to humans, humans should be studied, not animals. Rachel Carsen, the author of Silent Spring discussed these findings leading to a new age environmental movement (Patisaul,