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The Indoor Aquaponics Farm

Urban Organics plans to grow fish, greens, and maybe the whole indoor aquaponics industry

11 min read
The Indoor Aquaponics Farm
Urban Organics’ David Haider stands in front of one of several 13 200-liter tanks that will soon be home to 1000 tilapia, which will in turn help feed thousands of plants.
Photo: David Bowman

The old Hamm’s brewery looms over the gritty East Side of St. Paul, Minn., a redbrick citadel of suds that rolled out its last barrel in 1997 and then became a 3-hectare site for urban explorers to shoot trophy pictures and for graffiti artists to showcase their mad skillz.

But beyond the busted windows and spray-painted tags, business partners Chris Ames, Fred Haberman, and David and Kristen Haider of Urban Organics see an indoor farm. Using a hybrid farming method called aquaponics, which combines aquaculture (fish farming) and hydroponics (growing plants in water), this massive, 4700-square-meter indoor field of greens will feed thousands of fish and be fertilized by the resulting fish poop. Nothing will go to waste.

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The EV Transition Explained: Charger Infrastructure

How many, where, and who pays?

7 min read
Illuminated electric vehicle charging stations at night in Monterey Park, California.

Electric vehicle charging stations in Monterey Park, California.

FREDERIC J. BROWN/AFP/Getty Images

The ability to conveniently charge an EV away from home is a top concern for many EV owners. A 2022 survey of EV owners by Forbes indicates that 62 percent of respondents are so anxious about their EV range that travel plans have been affected. While “range anxiety” may be overblown, the need for an extensive and reliable external charging infrastructure is not.

Infrastructure terminology can itself be confusing. For clarity, bear in mind that a charging station is a specific physical location which has one or more charging posts. A charging post itself may have one or more ports, where each port can charge a single EV. Each post may have multiple types of service connectors to support different EV charging connector standards. And a port may supply varying power levels.

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Video Friday: Humanoid Soccer

Your weekly selection of awesome robot videos

4 min read
Humans and human-size humanoid robots stand together on an indoor soccer field at the beginning of a game

Video Friday is your weekly selection of awesome robotics videos, collected by your friends at IEEE Spectrum robotics. We also post a weekly calendar of upcoming robotics events for the next few months. Please send us your events for inclusion.

CoRL 2022: 14–18 December 2022, AUCKLAND, NEW ZEALAND
ICRA 2023: 29 May–2 June 2023, LONDON

Enjoy today’s videos!

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Designing Fuel Cell Systems Using System-Level Design

Modeling and simulation in Simulink and Simscape

1 min read
Designing Fuel Cell Systems Using System-Level Design

Design and simulate a fuel cell system for electric mobility. See by example how Simulink® and Simscape™ support multidomain physical modeling and simulation of fuel cell systems including thermal, gas, and liquid systems. Learn how to select levels of modeling fidelities to meet your needs at different development stages.