The quest to rescue nearly extinct rhino Two rhinos munch serenely on grass as the sun rises over Mount Kenya, oblivious to the massive global endeavour to prevent them being the last of their kind.

In the third season of Mike White’s HBO satire of the rich and terrible, a now familiar formula yields diminishing returns.

Najin, the last remaining northern white rhino matriarch, spends much of her time alone these days, as her daughter Fatu ...