IYKYK: The facts

How long is a marathon?

What happens to your exam paper once you finish it?

Famous movies that got technology wrong

What is a by-election?

Geography quiz: Are these countries coastal or landlocked?

What is the oldest coin in the world and how much is it worth?

What does 'Mercury in retrograde' mean?

Why do dogs eat grass? Does eating grass make dogs sick?

What is social media and is it being banned in the UK?

What is a solar eclipse and why do they happen?

What does GCSE stand for?

How to solve a Rubik's cube

The history of barbecues from around the world

Everyday things that you've never known the name of

Five words that used to mean something different

Quiz: How well do you know Earth's five oceans?

Quiz: Test you knowledge of the Great British motorways

Why are people right-handed or left-handed?

Six blockbuster films and how they got history wrong

Quiz: Can you guess the animal from its misleading name?

Quiz: Which Friends character are you and what makes a good friendship?

UFOs: What are they and what are the most famous sightings?

The science behind superheroes

Who is the current Prime Minister and who was the first?