Whale spa day, ‘gentle’ killer bees & a baby woolly mammoth

A new frog in Brazil, breeding success for the world’s smallest glider, whales enjoy a spa day in Canada, and how a ’toxic’ gas might help power elephant seals’ deep dives. HYBRID HELPERS FINCH SPECIATION NEW FROG KAKAPO COMEBACK HUMPBACK HIDEOUT BOWHEAD DAY SPA DEATH-DEFYING DIVES 3.5-BILLION-YEAR-OLD LEGACY TINY GLIDER 'LYUBA' ON LOAN