Now, something nice and relaxing after The Voice UK Results show (7.25pm)... Richard Hammond follows the fortunes of the Marsh Pride in Kenya's Masai Mara - a lion society which is brutal, dramatic and unpredictable. Nearby in Samburu National Reserve there is good news, as scores of elephants arrive with their vulnerable newborns. At Julia Bradbury's base in the wild Northwoods of Minnesota, the black bear young mums teach their cubs how to feed and stay safe from wolves. Meanwhile in California, grey whale calves are on an epic and dangerous migration. Part soap, part reality show and part news programme Planet Earth Live is the ultimate global wildlife drama.