If your head is in the clouds and you feel like you’re walking on air this Valentine’s Day, why not say exactly that? Related story on Yahoo Makers: Make Your Valentine a Heart-Shaped Chocolate Box ...

For my book Brain Trust, I chatted with Ian Stewart, mathematician, prolific puzzle author and very fun person to shoot the mathematical breeze with, who explains the following best card trick I've ...

When you purchase through links on our site, we may earn commission. Read our full commerce guidelines here. With a bit of luck, Easter will be one of the final milestones spent in lockdown, but until ...