You can now add lemons to the long list of random objects that can be used to start a fire. But unlike just generating friction and heat by rubbing two sticks together, the process of starting a fire using a piece of citrus fruit involves first turning it into a working battery with copper and zinc electrodes.
Someone got a brilliant idea: Let's give babies lemon wedges for the first time— just like every single parent does in the privacy of their home—and record their reaction in slow motion so the entire world can laugh and go aaaaawwwwwww at the same time.
If there is a way to race something, people will race it. Enter the Power Racing Series, which is basically souped up Power Wheels built on a budget of $500. It is one of the most ridiculous, crazy, innovative, fun, and dangerous racing experiences I've ever seen, and you need to do it now.
Sadly, you cannot make lemonade from lemons by pulling the pin on these incendiary pieces of fruit to make them explode. They're inert, you see, and just a side project for tinkerer Chris Myles.
While I doubt the super serious stiff in this DIY video is actually a super spy, he does have the DIY know-how necessary to hack apart an inkjet printer and make it into an invisible ink-spitting espionage machine. Enjoy! [MAKE]
You probably remember the ol' lemon/copper battery via electrolysis experiment from when Mr. Wizard blew your mind with it in 1958. But this "Citrus Clock" by French design troupe Anna Gram updates the concept with a touch of Ikea sensibilities, to the point where we might be cool with this sitting on the kitchen…