Why does one side of the brain control the other side of the body? Surely it would make more sense if the left half of the brain told the left side of the body what to do. We find out what the current thinking on this conundrum is. Plus, we ask how an electric toothbrush can disturb vision. Like this podcast? Please help us by supporting the Naked Scientists

Many a dog has been observed barking at the television - but can they see what's going on in 'One man and his Dog'? Can they see images better on LCD TVs rather than CRT? Plus, we ask why one side of our brain is wired up to control the other side of our body. Like this podcast? Please help us by supporting the Naked Scientists

We work out what would happen if you shone a light whilst travelling at light speed. Would you see anything? Would an observer see anything? Plus, we ask if dogs really can watch TV. Like this podcast? Please help us by supporting the Naked Scientists

In our quest for answers we discover how memories might be encoded in genes, though probably not the sort of memories you were expecting. Plus, we ask what would happen if you shine a light whilst travelling at light speed. Like this podcast? Please help us by supporting the Naked Scientists

What is it that sometimes makes micturating nasally irritating? Why does asparagus make your urine smell and why might some cereals do the same thing? Plus, we ask whether memories can be handed down through generations. Like this podcast? Please help us by supporting 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... Like this podcast? Please help us by supporting the Naked Scientists

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? Like this podcast? Please help us by supporting the Naked Scientists

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. Like this podcast? Please help us by supporting the Naked Scientists

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. Like this podcast? Please help us by supporting the Naked Scientists

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. Like this podcast? Please help us by supporting the Naked Scientists