Butterflies around Fukushima reactor mutate

A scientific research in Japan has found mutant butterlies around the damaged nuclear reactor in Fukushima. Meanwhile, the concern over invasive species 'hitchhiking' on Japan's tsunami debris, 'which floats across the Pacific Ocean, remains among some scientists in America. Within Japan, the nuclear crisis has accelerated the resurgence of an anti-nuclear movement which opposes the restart of nuclear reactors.