With each fish eating tens of thousands of invertebrates, and each predator eating tens of thousands of fish, DDT becomes ever more concentrated as it travels up the food chain, with dire health ...

In 1969, Congress passed the National Environmental Policy Act and the National Cancer Institute announced its findings that DDT could produce cancer. By then, individual states had started to ban ...

"This DDT pollution happened several decades ago ... (and a recent study by another team even connected an aggressive cancer in sea lions to DDT). But even though DDT has clearly been accumulating ...