Dinosaurs fights and suicidal lemmings...

We discuss why the sequence of how four-legged animals move their legs is commonly misrepresented; Wi-Fi, the gaping hole in our internet security; why eating too much is bad for your brain; fossilised evidence of dinosaurs fighting; what makes locusts swarm and could they be 'deactivated'; why you have your DNA to thank for the party animal inside you and what this means for your health. Plus in 'Stuff and Non-Science', are lemmings suicidal?