Dr Chris and Dr Xand learn all about ice. They follow a group of scientists and explorers to find out how icebergs are born and what happens to them before they melt.
Dr Chris and Dr Xand return to Store Glacier in Greenland with a team of top experts and explorers to find out more about glaciers and icebergs.
Professor Brian Cox swims with some great white sharks.
Claire Balding discovers how to give an orangutan an eye test.
Steve Leonard goes to South Africa to meet an expert team in search of an injured giraffe.
Clare Balding travels to West Africa to meet Shufai the gorilla.
Vet Steve Leonard travels to Laos, near Thailand, to meet an elephant with a sore leg.
Vet Steve Leonard meets Dee the seal, whose rotten teeth have become a serious problem.
Vet Steve Leonard finds out how vets help Champa, a bear with terrible headaches.
Clare Balding heads to London Zoo to meet Priscilla the tortoise.
Claire Balding goes to South Africa to see vets perform the first ever rhino skin graft.
Clare Balding meets Dr Keiichi as he carries out an underwater ultrasound on a manta ray, and a vet in Chicago uses human medical technology to check a chimpanzee's heart.