Question of the Week - From the Naked Scientists

We find out whether a giant hulk of steel can disrupt a bird's navigation system. Would a 350,000 ton tanker do the trick? Plus, we ask how cold it can be before hanging out the washing becomes pointless.

We find out if the old adage is true - do pets really look similar to their owners? Or is it just that we only tend to remember those that do look similar? Plus, we ask why pigeons like settling on oil tankers...

In this environmentally-themed QotW we find out how nations across the globe add up their greenhouse gas contributions. Does everyone do CO2 accounts in the same way? Plus, we ask why it is that pets look like their owners.

We discover why delicious chocolate is deadly for dogs. Why should they be denied the pleasure? Plus, we ask how countries measure their carbon dioxide output accurately.

We find out what would happen if you tried to use a stun gun on an elephant. Would you live to tell the tale? Plus, we ask why dogs need to avoid chocolate...

We find out how one makes more seedless grapes, bananas, oranges and watermelons when they don't have any seeds! Plus, we ask what would happen if you had the audacity to Taser(tm) an elephant...

This week's question is all about the cell-zapping power of radiation. Just how much does a standard medical scan expose you to? How does that compare to the levels radiation workers are limited to receiving? Plus, we ask how seedless fruits manage to reproduce.

Why is it that we serve white wines and red wines at different temperatures? Does this really affect the bouquet? Plus, we ask how many x-rays are too many.

We find out why it is we see red skies at all and the meteorology behind, Red sky at night, shepherd's delight; red sky in the morning, shepherd's warning. Is it true? Plus, we ask why different wines are served at different temperatures.

We find out how many children a sperm donor will father. Is there a limit to the number? Plus, we ask whether red skies at night really do delight shepherds.

Why is it that, when your mum asks you to move the TV aerial to a better position, the signal improves while you move it about and then degrades as soon as you let go? We find out what it is that makes the signal improve when you're holding a TV aerial. Plus, we ask how many offspring a sperm donor is likely to generate...

We find out what vitreous floaters are and how they can be removed. Will a coil of wire do the trick? Plus, we ask why holding a TV aerial can improve the picture.

How do spiders make such perfect webs? Are they expert architects, mathematical geniuses or natural engineers? Plus, we ask what the floaters in our eyes are, and if we can pull them out of the way...

We find out why we were told as kids not to sit too close to the television. Is there any scientific basis to the warning? Plus, we ask how it is that spiders manage to build such intricate and regular webs without geometry equipment.

We find out how sharks, proud owners of cartilaginous skeletons, make red blood cells without the aid of bone marrow. Plus, we ask whether it's safe to get up close and personal with your television set.