Answers to Science Questions

Why do eggs make things rise when they're baked, and why does yeast make dough rise?

How does a chameleon change its skin colour so fast and is there any molecular mechanism that's known to underlie...

I never know which plastics can be recycled and which can't. Also, how is it all recycled? What's the...

My local council has told us to stop putting plastic carrier bags in the recycling bin. The reason allegedly is that...

What happens to syringes and how do they get recycled?

We reckon that all the polar ice caps are melting. Assuming that they've all melted and the water levels have all...

I've heard that there are only two major recycling plants in the UK and the rest is sent abroad in boats. If this...

We're on an island surrounded by water. How come we've got a water shortage?

Why are we encouraged to shred all paperwork but we're not allowed to put shredded paper in the recycling bin?

I have a question about anti-diarrhoea tablets. I've never been in favour of over-the-counter remedies but...

Down here in Puerto Rico we're supposed to have the largest radio telescope in the world. Is that true, and in...

What do people do to plants to make them genetically modified?

How does taking herbal remedies such as St. John's Wort affect giving blood? Should you tell the blood donor...

You were talking earlier about a drug that keeps people awake. The military have been issuing amphetamines for years to...

Why is it that when you put something metal in the microwave, you get a firework display, and yet the inside of the...

Why do milk and orange juice or orange juice and toothpaste taste so disgusting together?

I know it sounds a bit crude, but I was wondering why farts seem to smell a bit worse and linger longer when we're...

I was wondering if you could tell me whether my male dog is sensitive to my menstrual cycle? I've brought a puppy...

What is the fifth taste you can sense on your tongue?

When someone meets someone else, is there a special hidden smell that couples have between them, so that if you were...

Why do we get cravings for certain foods, especially when it's for combinations of foods that we normally don...

My family moved to Chicago from London three years ago and since then, I've lost my accent, yet Mum and Dad still...

How can active transport in plants possibly work?

We occasionally look after a dog when our friends go on holiday. We noticed that when it wees on the grass, the grass...