In this edition, we find out why our dreams are mostly meaningless; why monkeys are responsible for weird things that happen as you’re falling asleep; and the creepy real-life inspiration for Freddy Krueger.

In this edition, discover why drunk sleep leaves you feeling exhausted; learn what’s causing that thumping headache; and find out the reason for those dispiriting hangover blues.

In this edition, we’ll be looking at how music helped our early ancestors to survive; the relationship between music, food and sex; and whether other animals ever write their own chart-toppers.

In this edition, we’ll be looking at how cloud-seeding rockets prevented rain at the Olympic opening ceremony; how lasers can help stop lightning strikes; and how millions of tiny balloons could control all of the world’s weather…or burn every city on Earth to the ground.

In this edition, we’ll be looking at what happens to you if you go too long without a good nap, and the strange, forgotten way our ancestors used to sleep.

In this edition, find out why chimps can’t be taught to have a conversation with you; why parrots repeat everything you say; and why your dog really doesn’t understand you (we’re so sorry).

In this edition, find out why humans started making friends in the first place and discover some of the surprising health benefits of friendship.

In this edition, learn why you view food as a cuddle substitute.

In this edition, we discuss swallowing spiders and spider bites to the penis.

In this edition, we look at which organs can grow back by themselves (the most impressive of which is one only women have) and how close we are to being able to regrow hearts and lungs.