They’re the unlikely legacy of a drug empire: a herd of hulking hippos roaming free in Colombia. They‘re the descendants of the exotic animals once kept by Pablo Escobar on his sprawling estate. But today, these hippos are no longer a curiosity. They’ve multiplied, reshaped ecosystems, and are sparking a thorny debate about whether culling them would be the best solution for all concerned. A rich, Indian, self-styled environmentalist says they should live – and is offering a bold solution. DW