Paul Watson, founder and president of the Sea Shepherd Conservation Society and famous for militant intervention to stop whalers, now warns mankind is "acting like a virus" and is harming Mother Earth.

Watson’s May 4 editorial asked the question "The Beginning of the End for Life as We Know it on Planet Earth?" Then he left no doubt about the answer. "We are killing our host the planet Earth," he claimed and called for a population drop to less than 1 billion.

The commentary reminded readers that Watson had called humans a disease before and he wasn’t sorry. "I was once severely criticized for describing human beings as being the 'AIDS of the Earth.' I make no apologies for that statement," the column continued.