Solar Powered E-bike Replaces Car Trips

A white longtail cargo bike sits on grass with fenced-in planters behind it. The bike has a basket made of black metal tubes on the front and a passenger compartment behind the rider seat for children made of similar black metal tubes. A white canopy is above the passenger compartment and a solar panel sits atop the canopy.

E-bikes can replace car trips for some people, and adding a solar panel can make the fun last longer. [Luke] did some heavy modifications to his RadWagon to make it …read more Continue reading Solar Powered E-bike Replaces Car Trips

China’s New 100 MPH Train Runs on Hydrogen and Supercaps

Electric cars are very much en vogue right now, as the world tries to clean up on emissions and transition to a more sustainable future. However, these vehicles require huge …read more Continue reading China’s New 100 MPH Train Runs on Hydrogen and Supercaps

Toroidal Propellers Make Drones Less Annoying

A black quadcopter sits on a grey surface. In place of traditional propellers are four figure eight propellers with sharp tips where the top and bottom of the eight would be.

Despite being integral to aviation for more than a century, propellers have changed remarkably little since the Wright Brothers. A team at MIT’s Lincoln Lab has developed a new propeller …read more Continue reading Toroidal Propellers Make Drones Less Annoying