The National Geographic Society has shown us a case of evolution in progress. Sadly, humans present in the ecosystem are the natural catalyst.

tl;dr?

Elephants in the wild are being poached by their tusks by inveterate assclowns, and the ones without tusks are becoming more prevalent. This trend is broader than the result of the tusked elephant population being depleted. The elephants with the tuskless genetic profile are reproducing offspring with this tuskless trait.

Whilst in their hubris, anti-evolutionary humans view humans as above nature, but here we witness the effects of nature on nature in an otherwise textbook example of natural selection.