People Powered Farms?

For indispensable reporting on the coronavirus crisis, the election, and more, subscribe to the Mother Jones Daily newsletter.


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

DEMOCRACY DOES NOT EXIST...

without free and fair elections, a vigorous free press, and engaged citizens to reclaim power from those who abuse it.

In this election year unlike any other—against a backdrop of a pandemic, an economic crisis, racial reckoning, and so much daily crazy—Mother Jones' journalism is driven by one simple question: Will America will move closer to, or further from, justice and equity in the years to come?

If you're able to, please join us in this mission with a donation today. Our reporting right now is focused on voting rights and election security, corruption, disinformation, racial and gender equity, and the climate crisis. We can’t do it without the support of readers like you, and we need to give it everything we've got between now and November. Thank you.

DEMOCRACY DOES NOT EXIST...

without free and fair elections, a vigorous free press, and engaged citizens to reclaim power from those who abuse it.

In this election year unlike any other—against a backdrop of a pandemic, an economic crisis, racial reckoning, and so much daily crazy—Mother Jones' journalism is driven by one simple question: Will America will move closer to, or further from, justice and equity in the years to come?

If you're able to, please join us in this mission with a donation today. Our reporting right now is focused on voting rights and election security, corruption, disinformation, racial and gender equity, and the climate crisis. We can’t do it without the support of readers like you, and we need to give it everything we've got between now and November. Thank you.

We Recommend

Latest

Sign up for our newsletters

Subscribe and we'll send Mother Jones straight 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