And how do we know?
Why is there so much distance between them?
Chemist Pether Wothers takes a sniff at this question from a listener
We ALL know that feeling...
Who's at more risk; car drivers or motorcyclists?
Does the size of a planet determine the size of the life forms that live there?
... and how do we know?
What prevents them from sticking?
How much land do you need to live?
Should you really wee on it?
When should I get a mark on my skin checked out? How do you know if there's a problem with it?
Are some plants good or bad for our bees?
Why does the sea feel warmer at night?
Is Lyme's disease a big problem?
What causes freckles to come out in the sunshine?
How do the weather people do it?
Is there any truth to the shepherd saying?
What's going on in my ears when they pop after a flight?
What's upped the pollen count?
Why does burnt skin flake instead of becoming beautifully bronzed?
What is causing the current heatwave?
Is there an evolutionary advantage to boredom?
Is it possible to weigh things in space?