Rhino horns have got smaller over time as poachers target big prizes

A database of photos taken from 1886 to 2019 reveals that horn size has gradually decreased in five species of rhinoceros, probably due to poaching

Rhino horns have got smaller over time as poachers target big prizes
A database of photos taken from 1886 to 2019 reveals that horn size has gradually decreased in five species of rhinoceros, probably due to poaching