Answers to Science Questions

Why does the sweat of some people's underarms turn their shirts yellow?

The Earth's core is basically molten and the Earth is in the region of four billion or so years old. How come it...

If all these bats are whizzing about and making all these noises, how do they not fly into each other? How do they know...

If bats can do this, why aren't aeroplanes equipped with the same sort of things?

I have very sensitive hearing and I don't like sudden loud noises or repetitive sounds. I am also very sensitive...

Is it true that sound travels further in cold weather than in warm weather and how does this work?

Why is it that when you're in a car and going past a bunch of other parked cars all in a long row, you hear a...

Some washing powder manufacturers are starting to recommend that we wash our clothes at 30 degrees centigrade instead...

What's glaucoma?

I'm very short sighted, but over the years I've started to suffer from a astigmatism. I'd like to know...

I've got diabetic retinopathy in both eyes and I was wondering if there was any evidence that if you get your...

Why can't I recognise a face that I've known for many years upside down?

Why is it that we're perfectly comfortable with black and white movies and photographs when we know that the world...

My eyes often become watery for no apparent reason. Why do you think this is?

We all know that when we open our eyes under water we see blurry images. I believe that this is because water has a...

I have neovascular macular degeneration of the right eye, which means that I haven't any sight left in that eye. I...

My husband has recently developed a squint overnight. Why is that?

Can bulls see red?

Do birds that hunt in water or below water have polarised vision, as it would be a good advantage for them to be able...

Why are the cones in our eyes red, green and blue? Why not red, yellow and blue? How can we see yellow?

I'm researching the 21 grams postulate from 1907. What can you tell me about it or refer me to in order to prove...

I've just been reading Superhuman by Robert Winston this week and never realised that mitochondria, the power...

If radiation is so dangerous to cells, why don't they use it more for brain tumours?

Upon-Tyne - My mum is currently having chemotherapy and radiotherapy. What makes her hair fall out, and is radiotherapy...