What's the definition of The Butterfly Effect?

Japanese scientists have found that radiation from Japan’s Fukushima nuclear disaster has mutated a domestic butterfly species. It may not have morphed into Mothra, but the pale glass blue butterfly has displayed genetic and physiological changes.

The biological effects of Fukushima are just now being realized. A radioactive tuna caught international headlines in May, and at the same time, scientists from the University of Ryukyus were quietly monitoring mutations among samples of butterflies.

For more, see the paper in the journal Nature.

We (humans) are the worst neighbors to our friends in nature. 

We truly are. We act like we own the place.