Answers to Science Questions

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...

I'm 24 and I was diagnosed with bladder cancer earlier this year. How did this happen? I'm only 24?

Gerard said earlier that all cells want to expand and grow and live. So why does cancer kill you? Why don't you...

A while ago I was in an experiment where we were told that some people's blood fights cancer. Her idea was that...

How are stem cells being used in cancer research?

I'm an A-level biology student and I'm interested in knowing how mRNA from a gene gets from the gene in the...

Can you please tell me how to stop my body making mucus? I've had dysfunctional Eustachian tubes for seven months...

What are magnets made out of and how are they made?

Could you tell me if the ozone hole is now getting smaller since CFCs have been banned?

I know cassette tapes are virtually obsolete, but I have a question about them. Very often when I'm listening to...

Why is blood red?

Can I have a leech for a pet? I am allowed to buy one? If so, where can I buy one?

Is it true that some of our senses degenerate and that some of them are more susceptible to damage than others? We see...

Who would win a fight between a hippo and a polar bear?