People Powered Farms?

Fight disinformation: Sign up for the free Mother Jones Daily newsletter and follow the news that matters.


Two grad students from MIT want to harvest the energy of human movement in urban settings. The so-called “Crowd Farm” would turn the mechanical energy of people walking or jumping into a source of electricity. James Graham and Thaddeus Jusczyk of MIT’s School of Architecture and Planning say a Crowd Farm in Boston’s South Station railway terminal would work like this: A responsive sub-flooring system made up of blocks that depress slightly under the force of human steps would be installed beneath the station’s main lobby. The slippage of the blocks against one another as people walked would generate power through the principle of the dynamo, which converts the energy of motion into an electric current. They point out that although a single human step can only power two 60W light bulbs for one flickering second, a crowd in motion, with 28,527 steps, for example, could make enough energy to power a moving train for one second. The pair tested a prototype stool at the Venice Biennale and in a train station in Torino, Italy, which exploited the passive act of sitting to generate power. The weight of a human body spun a flywheel, which powered a dynamo that lit four LEDs. “People tended to be delighted by sitting on the stool and would get up and down repeatedly,” said Graham.

Glad to see innovation coming from new, even unexpected, fields. Just shows how many human brains are turning to solving these issues. Sometimes hope abounds. JULIA WHITTY

We've never been very good at being conservative.

And usually, that serves us well in doing the ambitious, hard-hitting journalism that you turn to Mother Jones for. But it also means we can't afford to come up short when it comes to scratching together the funds it takes to keep our team firing on all cylinders, and the truth is, we finished our budgeting cycle on June 30 about $100,000 short of our online goal.

This is no time to come up short. It's time to fight like hell, as our namesake would tell us to do, for a democracy where minority rule cannot impose an extreme agenda, where facts matter, and where accountability has a chance at the polls and in the press. If you value our reporting and you can right now, please help us dig out of the $100,000 hole we're starting our new budgeting cycle in with an always-needed and always-appreciated donation today.

payment methods

We've never been very good at being conservative.

And usually, that serves us well in doing the ambitious, hard-hitting journalism that you turn to Mother Jones for. But it also means we can't afford to come up short when it comes to scratching together the funds it takes to keep our team firing on all cylinders, and the truth is, we finished our budgeting cycle on June 30 about $100,000 short of our online goal.

This is no time to come up short. It's time to fight like hell, as our namesake would tell us to do, for a democracy where minority rule cannot impose an extreme agenda, where facts matter, and where accountability has a chance at the polls and in the press. If you value our reporting and you can right now, please help us dig out of the $100,000 hole we're starting our new budgeting cycle in with an always-needed and always-appreciated donation today.

payment methods

We Recommend

Latest

Sign up for our free newsletter

Subscribe to the Mother Jones Daily to have our top stories delivered directly to your inbox.

Get our award-winning magazine

Save big on a full year of investigations, ideas, and insights.

Subscribe

Support our journalism

Help Mother Jones' reporters dig deep with a tax-deductible donation.

Donate