Ben Garrod, presenter, biologist and author joins us to chat about the animals that no longer exist and those that are currently endangered this week!

Professor Hallux and Nurse Nanabot are back this week too and they have all the information for us about opticians and how our eyes work! Dan also answers your questions this week on how glasses work and much more!

Also this week we're exploring the cretaceous plants in Age of the Dinosaurs, finding out about how they kept dinosaur predators at bay through poison, stinky smells and sticky slime!

A toxic fart is the subject of Dangerous Dan this week and in Science in the News, there's news of the James Webb Telescope in space!

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