Butterflies in Fukushima show serious genetic and physiological damage from radiation.
A study published in Nature this week shows that more than a third of pale blue grass butterflies born in the generation after the nuclear disaster show abnormalities. Their genetic material is mutating.
Genetic material is the foundation of life and ecosystems. To be blunt, we simply should not use technology that can damage irrevocably that fundamental a component of our biological prosperity.
For more, the BBC has the best article on the study.