Answers to Science Questions

Where does all the sand in the Sahara desert come from?

Mirrors reflect visible light. But how effective are they at reflecting other electromagnetic waves like x-rays and...

How do air sacs in the lungs help with gas exchange?

Can we crack water into it's components of oxygen and hydrogen and then burn the hydrogen using the oxygen to...

Is it dangerous to live 500 metres away from a mobile phone mast?

The Hunstanton cliffs are made up of layers of white chalk, red chalk and the main part is sandstone at the base. Why...

Is there a reason for cyclic weight loss?

How does my body absorb the morphine in my dry-feeling patch?

It's recommended that we eat 5 portions of fruit and vegetables a day. So I'd like to know, if I liquidise...

Everybody knows that salt melts ice. Why are there such big icebergs in the sea?

If we store seasonal fruit and vegetables will they still have all the same nutrients as when they're fresh?

If you don't eat enough cholesterol - does your body not just make it anyway?

If red wine is good for us, is sherry good too?

Does peanut butter help to lower your cholesterol?

Do high roasted coffee beans cause cancer?

What causes the tremor seen in heavy coffee drinkers, and is that related to dopamine like with Parkinson's...

How are seedless grapes grown?

If you could drill a hole from the North Pole to the South Pole, and it was big enough to drop a stone through, would...

When you fry popadoms, why does it curl upwards away from the layer of oil?

Humans spend all our lives one way up. So when we stand on our heads, everything is upside down. Bats spend half their...

We can successfully insulate against heat, and against light, and against sound. Is it possible, do you think, that we...

I'm right in thinking that matter cannot be destroyed. So is it such that everything that has been created in...

Is it true that lightning never strikes in the same place twice?