From modest beginnings on a three square kilometre land size with three rhinos 40 years ago, the Tsavo West Rhino Sanctuary has advanced into a national and global treasure. Its expansion to a 3,200 square kilometres land size - the largest in the world - positions the ecosystem as not only a conservation hub, but also a secure space for our more than 200 rhinos that will attract more tourists to Kenya.(William Samoei Ruto, PhD)