ITV's Force of Nature tackles a familiar subject - wildlife under pressure - capturing the relentless battle for survival in the animal world as it faces unpredictable challenges from weather and climate change. "The original brief was really simply animals and weather," series producer Seb Illis told Radio Times. "But we also recognise it's a real opportunity to address climate change in a mainstream natural history series. In the first episode, heavy rains have flooded a river in the Masai Mara in Kenya and two cheetahs need to cross it to reach their prey. Crossing and swimming through a river in such torrential weather isn't something they are evolved for, but needs must.