Dr Rebecca Lent, executive secretary of the International Whaling Commission, talks about conserving whale stocks; proving you are never too young to force large businesses to change their strategies, Madi Vorva has been campaigning against unsustainable palm oil since the age of 11 and Cassa Pancho MBE, founder of Ballet Black, a company for dancers of Black and Asian descent. Introduced by Linda Ness and Suzie Thorpe.