Why don't we remember the first few years of our lives?
'How far up can a helium balloon go? Could it go out to space?' asks Juliet Gok, aged 9.
'Why does the Earth spin?' asks Joe Wills from Accra in Ghana.
How much does the bacteria inside my body weigh?
Why do some people have a terrible sense of direction?
Does the full moon make us act strangely?
How zero was discovered and why it allows us to forecast the future.
Does nothing exist? Our scientific duo consider the nature of nothing.
'Why is my mother tone deaf?' asks listener Simon. The team investigates.
What is the strongest thing in the universe?
Could we live on another planet?
What causes middle-aged spread?
How being left-handed affects your brain and behaviour.
What makes people left-handed?
Can horses count? And which animal is the best at maths?
How does leg hair know to grow back the same length? And why do we have body hair?
Why is everything in space round? Drs Rutherford and Fry investigate.
Why do we cry, and does it makes us feel better?
What's the optimum scientific method for making the perfect cup of tea?
Can we send our waste into the sun? Drs Rutherford & Fry investigate.