David Attenborough brings to life, in unprecedented detail, the last days of the dinosaurs. Palaeontologist Robert DePalma has made an incredible discovery in a prehistoric graveyard: fossilised creatures, astonishingly well preserved, that could help change our understanding of the last days of the dinosaurs. Evidence from his site records the day when an asteroid bigger than Mount Everest devastated our planet and caused the extinction of the dinosaurs. Based on brand new evidence, witness the catastrophic events of that day play out minute by minute.
Florida is famous for its beaches, blue water and year round sun – but it also has a surprising wild side. It's home to pine forests, coral reefs and the famous Everglades wetland, the largest sub-tropical wilderness in the US. Here, manatees swim in crystal clear rivers, baby alligators practice their hunting skills and miniature deer roam free. Every year, this state faces the full forces of nature - from wildfires to flooding and powerful hurricanes. And today, a growing human population and a cast of animal invaders are threatening this wild paradise. With the help of pioneering scientists, will Florida’s wildlife continue to weather the storm?
In the second of this two-part series, Colin Stafford-Johnson continues his journey in Cuba, one of the most captivating islands in the world. Here, he encounters bats emerging from a labyrinth of limestone caves to feed on nectar from giant hibiscus flowers, and tiny frogs, smaller than a fingernail, living in patches of hidden emerald forest. And on the white sand beaches, baby green turtles emerge from their nests to make their way to the sparkling Caribbean Sea.
Dr Helen Czerski looks at the anatomy of an avalanche. From shocking eyewitness footage from within an avalanche, to detailed CT scans showing the microscopic changes that cause them, we can now capture exactly what happens as snow transforms into a deadly and unpredictable danger.