Know the answers to a variety of questions such as: When did zero become a number? Who was the inventor of Bitcoin? What did the Big Bang sound like? How have sports changed around the world? What’s a malapropism? and many more! What? A fascinating exploration of pyramid schemes, the people who run them, and the lives ruined by them Lions are skilled hunters and can run up to 50 miles per hour (80 kilometres per hour) in short bursts while chasing prey.

What? Step inside the walls San Quentin State Prison for a podcast exploring every facet of life behind bars I got this for my dad's birthday and it's so fun. We keep it at the dinner table and are all thoroughly entertained by all the facts. Fun book! The T.rex likely had feathers. Scientists in China discovered Early Cretaceous period tyrannosaur skeletons that were covered in feathers. If the ancestors of the T. rex had feathers, the T. rex probably did, too. You can be heavily pregnant and not realise. Cryptic pregnancies aren’t that uncommon, with 1 in 500 not recognised until at least halfway through and 1 in 2,500 not known until labour starts.A rainbow on Venus is called a glory. Appearing as a series of coloured concentric rings, these are caused by the interference of light waves within droplets, rather than the reflection, refraction and dispersion of light that makes a rainbow. There might be a cure for 'evil'. Well, a cure for psychopathy, anyway. Psychologists argue that aspects of psychopathy can be 'cured' by cognitive behavioural therapy, which is said to reduce violent offences by those with the condition. Preliminary research suggests that computer-based cognitive training could help a psychopath experience empathy and regret, too. Snails have teeth. between 1,000 and 12,000 teeth, to be precise. They aren’t like ours, though, so don’t be thinking about snails with ridiculous toothy grins. You’ll find the snail's tiny 'teeth' all over its file-like tongue.

You remember more dreams when you sleep badly. Research suggests that if you sleep badly and wake up multiple times throughout the night you will be more likely to recall the content of any dreams you had. You are also more likely to remember a dream when woken from one. Aristotle developed Aristotelian physics in 300 B.C., but most of it was speculative and proven wrong by other philosophers.

There’s a planet mostly made from diamond. Called 55 Cancri e, it's around twice the size of Earth and some 40 light-years away from us within the Cancer constellation. A horse normally has more than one horsepower. A study in 1993 showed that the maximum power a horse can produce is 18,000W, around 24 horsepower. Earth’s poles are moving. This magnetic reversal of the North and South Pole has happened 171 times in the past 71 million years. We’re overdue a flip. It could come soon, as the North Pole is moving at around 55 kilometres per year, an increase over the 15km per year up until 1990.

It's almost impossible to get too much sugar from fresh fruit. While the sugar in fruit is mostly fructose and glucose (fructose is what's converted into fat in your body), you can't get too much sugar from fresh fruit. Fresh fruit contains a lot of fibre and water which slows down your digestion and makes you feel full. Identical twins don’t have the same fingerprints. You can’t blame your crimes on your twin, after all. This is because environmental factors during development in the womb (umbilical cord length, position in the womb, and the rate of finger growth) impact your fingerprint. The world’s oldest cat lived to 38 years and three days old. Creme Puff was the oldest cat to ever live. The average dinosaur lifespan was surprisingly small. The Tyrannosaurus rex, for example, reached full size between 16-22 years old and lived up until 27-33. The largest dinosaurs such as the Brontosaurus and Diplodocus tended to live up to between 39-53 years old, maybe reaching the heights of 70. Beavers don't actually live in dams. Technically, beavers live in a lodge that they build behind a dam, within a deep pool of water.In Scotland, two students went to an art exhibition and left a pineapple on a table to see if it would become art. When they returned four days later, the pineapple was still there and had been covered with a glass display case. 403/500 People who eat whatever they want and stay slim have a slow metabolism, not fast. A skinny person tends to have less muscle mass than others, meaning their basal metabolic rate (BMR) is lower than those of a high muscle mass – this gives them a slow metabolism, not a fast one. Mount Everest isn't the tallest mountain on Earth. Mauna Kea and Mauna Loa in Hawaii, the twin volcanoes, are taller than Mount Everest due to 4.2km of their heights being submerged underwater. The twin volcanoes measure a staggering 10.2km in total, compared to Everest’s paltry 4.6km. Lions are the only big cats that live in groups called prides, consisting of several related females and their young, along with a few male lions.