What causes goosebumps? How close does lightning need to be to hurt you? Where is Voyager? What causes yawning? How do we perform automatic behaviour?

What causes thunder and lightning? Are some people resistant to HIV? Are vitamin supplements good for children? What does crystal meth do to your brain? Why do phones only give you nine minutes to snooze? Can you compress light?

How do satellites stay in orbit? Why do my fingernails grow at different speeds on each hand? What is the sun made of? Where did the liquid in my cans go? Why do some children turn mute after trauma? Plus, why people smell their fingers after shaking h...

Is it safe to feed livestock to meat? What happens to the rubber that wears off from car tyres? Does water go down the drain in different directions? Can you rewind the radio? Why is the ocean salty? Can candles give you cancer? Plus, the ancient Homo ...

Why do I get a stitch when I exercise? What determines our body temperature? How quickly do fruit and vegetables lose nutrients after they are picked? Why do ropes get tangled up in knots? Can you get stuck together during sex? Plus, news of an edible ...

Why does stress give me knots in my stomach? Why don't I gain weight when I eat? How does sun cream work? Why does wheat give me gas? If we were to compress air to the pressure of water could we then swim in air? Do any planets stay still? Plus the sci...

Can we manufacture water? Should women eat uncastrated meat? Can animals predict the weather? Is there a loss of vitamin content in tinned food? If you're in an aeroplane traveling at the speed of light, could you walk to the front of the plane? What c...

Why do we get brain freeze? What happens to your arm when it goes to sleep? Why do clouds form? Do we really only use 10% of our brain? If we evolved from apes how come there are still monkeys? Plus, how to "unboil" an egg.

How do phantom limbs work? Can power stations affect local weather? Plus, how to avoid jet lag and the snails that have weaponised insulin.

Should I let my child run up and down stairs? Is crocodile bile deadly? Why don't animals in the wild bleed to death during child birth? Will there come a time where we stop breaking any new sport records? Is there such a thing as a "baby brain"?