From the cruel common cold to shocking smallpox we cough up the disgusting details of snot, sneezes and viruses. Lucy...

Lovely icky red blood - what is it and why do we need it? How does it transport important things around the body? Bob...

Explosions, atoms and fiendish forces that bubble, bang & bump! What makes things explode? Lucy has made a mistake in...

What happens to our bodies in space? Can we live on other planets? Who invented the telescope and how can we make one...

Gruesome greenhouse gasses and deadly toxic waste. Why do we recycle and what would happen if we stopped? Is global w...

Poo, pizza and disgusting germs! Why do we poo and how does digestion work? Who was Louis Pasteur and how did he help...

What nasty invaders live in our homes and on our bodies? Fleas, parasites, worms and every tiny, disgusting thing in ...

What is the brain and how does it work? Mark arrives in the studio with a new part of pants, 'Smarty Pants' - he has ...

Bang, crash, wallop! What is a sound? How do we hear? How do our ears work? Inventor of the telephone Alexander Graha...

Flesh eating plants & dancing flowers are all packed into the show this week. Mark and Lucy both bring in their favor...