Why do we still have physical keys when passcodes are so effective?
If cats can't see red light, why do they chase lasers so much?
What percentage of the atoms we are born with, do we die with?
What's the difference between a US and a UK billion?
Why don't lightning strikes on the ocean kill marine life?
Do our medical professionals get sick more than the rest of us?
Seeing as Earth is just right for life, does that make hunting for ET futile?
Could plankton be modified to eat plastic?
If pi just keeps going, how do we keep finding more numbers?
Which animal would come out of the ring alive?
Do any other animals go through the menopause?
Can we make gravity by spinning a spaceship?
Is a spacewalk really a big deal?
Is the blue whale really the longest animal?
If you started counting when you were born, what number would reach before you died?
Why don't compasses point to East or West?
Whether or not insects feel is a contentious issue so we sought the help of an expert...
What would have happened if Neil Armstrong had taken one giant leak for mankind?
...and where does the sky end?
...and if so, why?
By eating omega-3 fatty acids, could I cut the risk of a heart attack?
My dad is dark-skinned, my mother light so could I change the colour of my skin?
Normally, when stuff collides, things fly apart from each other. So how did planets form in the first place?
How long could someone survive on a bypass machine?