It's False It’s actually coldest 80 kilometres above the equator. The warmest temperatures are found 300 kilometres above the poles- this is due to convection currents.

It's True - Music is written to a CD as a series of zeros and ones which are burned into a track on the surface of the disc. If you unwound it the track would stretch 3 and a half miles. It would also take you over 80 years to write out by hand all of the noughts and ones that encode the music on one single CD !

It's True - A lightning strike on the ground nearby can kill if it creates a big voltage difference between your feet because the electricity flows through you, as well as across the ground. Keeping your feet together reduces the chances of this happening. Cows are apparently particularly vulnerable to this effect and so should take particular care during thunderstorms !

It's False - It was the Montgolfier brothers who invented ballooning. Napier invented logarithms.

It's True - Traptek, a Colarado-based company, have found a way to apply odour-eating activated carbon particles to fabric using a modified photocopier. The carbon absorbs odours from even the whiffiest individuals !

It's False There’s only one right way to kiss someone ! According to German researchers who secretly spied on kissing couples at railway stations, airports, beaches and parks, people are twice as likely to tilt their heads right as opposed to left. Favouritism of one side over the other may originate whilst we are in the womb, say the researchers, when babies tend to turn their heads more often to the right.

It's False - Actually the sperm whale has the record for largest mammal brain at 7.8kg. That's compared with 1.5 kg for the average human. So why aren't whales all geniuses? Because they have a huge body and hence need a large brain to control it.

It's False Atoms are most closely packed in solids, then liquids. The atoms of a gas are the most spread out of all.

It's True - in fact it weighs a ton and a quarter (that's imperial tons), making up a quarter of its bodyweight and is an inch and a half thick in places.

It's True - The average fingernail grows about 0.8 mm per week. The world's longest nails were owned by Indian Shridhar Chillal from Pune, near Mumbai who's 4 foot long "talons" would put even Freddie Kruger to shame.