Are these dots blue or purple? Bizarre optical illusion will make

#xa; The optical illusion involves a series of 1,000 dots ranging from very blue to very purple

Bizarre glasses promise to prevent motion sickness - but they aren

Are these dots blue or purple? Bizarre optical illusion will make

Can YOU solve these optical illusions? Take the test to see if

Can YOU solve these optical illusions? Take the test to see if

Bizarre glasses promise to prevent motion sickness - but they aren't

Bizarre glasses promise to prevent motion sickness - but they aren't

That's roar-some! We can tell whether someone is bigger and

This is how much air pollution is going to cost the UK by 2035

Are these dots blue or purple? Bizarre optical illusion will make

Are these dots blue or purple? Bizarre optical illusion will make you