Ask The Naked Scientists

Plus, what makes TB so drug resistant, and what's the point of going to Mars?

Before we can speak, what language do we think in? Can you transplant the same organ multiple times?

Are best before dates a mandatory thing? Why does scratching an itch feel good?

Why do women stop producing breast milk?

Why is that hard, and how did rhyme, song and rhythm evolve? Also, we take a look at treatments for cataracts...

What is a wormhole?

Also, why do stars appear to flicker, or move? And can animals experience regret?

Why do the half moons under our nails disappear as we get older?

Also, does flash photography harm baby's eyesight? and what does it mean to be double-jointed?

Also, is carbonated water better for you than still water? And Is there a cure for tinnitus?

Why does nothing last anymore? Why does a blackout occur?

Also, What makes us human? And why is there only life on Earth?

How did the moon form? And can you escape a black hole?

Also, how do genetically modified crops work? and why do some animals bob their head as they walk?

How bad are space missions for the environment here on earth? Why are we attracted to certain tastes?

And can a team of cyclists solve the looming energy crisis

What does anaesthetic do? and why don’t the colour stripes in toothpaste mix?

Would fireworks work on Mars? And what do steroids do to the body?

How do meteors form? Is the universe finite or infinite?

Setting glue, the difference between mist and fog, and are gravitational waves audible?

And more from this week's quick fire science questions with Dr Chris Smith.

Do we need to take diet supplements? And is there any merit in acupuncture?

Could we ever learn to get used to pain, and is your car's speedometer lying to you?

Why can't we go backwards in time? And why can't different species reproduce?