Question of the Week - From the Naked Scientists

Why do horses go "neigh!" when donkeys "he-haw!"? And what noize do zebras make? Just because they look similar, should they sound the same? Plus, we ask how food alters the smell of your urine...

We discover some likely explanations for the different blood groups seen in humans. Is there any reason for having one blood type over another? Do other animals have them too? Plus, we ask: why do horses, donkeys and zebras all make different noises?

Crocodiles have been the same for millennia upon millennia. What's going on? Why are they so uneventful in terms of evolution? Plus, we ask why we have different blood types.

Do radio signals change as we move to and from the transmitter? Do our movements affect how a radio boradcast sounds? We find the answer in this question of the week. Plus, we ask why crocodiles haven't changed all that much in the last few million years.

We find out if it's possible to put an age on someone without a birth certificate. Given that cells regularly regenerate in the body, can you carbon date your grandmother? Plus, we ask if radio shows get doppler shifted.

We explore why a dog's mouth might be cleaner then a human's from the perspective of getting a bite from either. Who's got the worst oral bacteria? Plus, we ask how worms survive flooding of their soil-y burrows.

This week's question endeavours to find the answer to the footpath conundrum - how do worms survive in the rain? What happens if the soil dries out? Plus, we ask if it's possible to carbon-date one's grandmother...

This week's question is all about energy! Do our bodies manage to harvest all the energy from food or do we miss a few calories here and there? Plus, we ask whose bite is worse, dog or human?

We find out if it's possible to revise for exams, become a mechanic or pick up a new language in your sleep! Do those CDs really work? Plus, we ask how many calories our bodies actually absorb from the food we eat.

In this lucrative Question of the Week we find out how paper notes and metal coins are minted and printed in the money making factories of the UK. Plus, we ask if and how subliminal CDs work...

We find out about the physics behind wet T-shirt competitions! Why is it that pale clothing becomes transparent with the addition of water? Plus, in a totally unrelated question, we ask how money is made...

In this seasonal Question of the Week we explore how removing the lovely white reflective stuff might cause the whole world to warm up. Plus, we ask how wet T-shirt competitions work (the science behind it, that is)!

Got an urgent call that needs to overcome virtually infinite gravity? This Question of the Week explores if mobile calls from black holes are possible. Plus, we ask if ploughing up the snow can worsen global warming.

We discover whether life in the Cretaceous period was as seasonal as it is today. Did dinosaurs put up with leaves on the line too? Plus, we ask whether it's possible to make a call from a black hole.

We find out if evaporation works in cold weather too! Is it worth using the tumble dryer, after all? Plus, we ask if the seasons have always sat in the same part of the solar year...