how-toGearHow to Avoid Accidentally Buying a Stolen PhoneBy Christina BonningtonBusinessHow to outsmart big dataBy William PoundstoneBusinessHow to make an infinity mirrorBy Jeremy CookGearHow to detect fake numbersBy William PoundstoneBusinessHow to skateboard at speedBy Kathryn NaveGearHow to make a rocket stoveBy Robin HagueBusinessHow to teach words to a dogBy John W PilleyGearHow to learn a language in three monthsBy Katie ScottBusinessHow to build a world-beating appBy Kathryn NaveBusinessHow to build a marble machineBy Jeremy CookBusinessHow to turn your smartphone into a microscopeBy Kathryn NaveBusinessHow to make your own wind turbineBy Leila JohnstonGearHow to make a neon glow fanBy Jeremy CookGearHow to Turn Any Old Speakers Into Wireless StreamersBy Christina BonningtonGearOS X Yosemite: How to Use the New, More Powerful Spotlight SearchBy Christina BonningtonScienceHow to do a full body workout in seven minutesBy Helena WilliamsBusinessHow to build an app cloneBy Helena WilliamsBusinessHow to take tilt-shift photographsBy Jeremy CookGearOS X Yosemite: Take a Tour of Mail's Best New FeaturesBy Christina BonningtonGearChange Your Crappy Twitter Handle Without Losing FollowersBy Liana BandziulisScienceHow to swing a chaotic pendulumBy Helena WilliamsBusinessHow to make an LED flowerBy Jeremy CookBusinessHow to organise a hackathonBy Rachel NuwerGearFacebook's New Save Button Is Actually UsefulBy Christina BonningtonMore Stories