Why do people like to be scared? asks Heidi.
What determines left or right handedness? asks Neal Shepperson
Is dark matter a fudge to fit existing theories to inexplicable observations? asks Peter.
How does gravity pull us? asks Emma.
Do individuals perceive time differently? asks Joe from North Yorkshire
What’s the point of mosquitoes? asks Cathy.
Could there be something to astrology?, asks Dan in Australia.
Why do some people find noises like a fork scraping a plate so terrible?
Can I make a pizza that contains my recommended daily intake of everything? asks Paul
"Why are some fungi helpful and others harmful?" asks Paul Glaister in Reading.
What would it take for humans to live permanently on Mars? asks listener Martin.
How many hamsters on wheels would it take to power London? asks Judah from Virginia, USA.
The Curious Cases of Rutherford & Fry
Is there a point in space where the Sun could heat a burrito perfectly? And other puzzles.
What are ligons and tigers? What is a species?
When and how is the universe going to end?
What’s the point of wasps?
Can we make it rain?
Why do our tummies rumble - and when they do, does it always mean we are hungry?
A preview of series 16: Longer, louder and locked down.