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Pass a straight rod through a curved (part-parabolic) slot in this surprising mathematical-visual illusion.

Select different data sets and paint them across the map to reveal the behaviour of our atmosphere, oceans and Earth.

It’s electrifying! Get things moving with your very own electromagnet!

As humans age, the corneas in their eyes start to thicken, causing effects on their vision similar to yellowing.

Accuracy and precision are easily confused, but separate measurement concepts.