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(© Shedd Aquarium / Brenna Hernandez)

Since embarking on a new sustainability initiative, Shedd Aquarium has cut annual water use by more than half, from 60 million gallons in 2012 to 28 million gallons today.

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(Kārlis Dambrāns / Flickr)

Scientists around the world are working to develop the next generation of batteries. We speak with one who is leading the charge at Argonne National Laboratory.

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(Ameren Illinois / Facebook)

State regulators signed off Monday on an energy savings plan that consumer advocates say could cost downstate residents nearly 30 percent in savings on utility bills.

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(Alex Ruppenthal / Chicago Tonight)

Instead of dumping it in landfills, organic waste could be used to power cars, heat homes and potentially reduce the need for new landfills in the U.S., according to research by Argonne National Laboratory.

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(Mark Lopez / Argonne National Laboratory)

New technologies that could change the way we live and work will be on display this month during a reality TV-inspired competition sponsored by the U.S. Department of Energy. 

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(Monika Wnuk / Northwestern  University)

Northwestern University students spent more than a year designing and building a fully solar-powered home that will soon be part of an international competition organized by the U.S. Department of Energy.

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(Ameren Illinois / Facebook)

The Illinois Commerce Commission has until mid-September to rule on a downstate utility provider’s energy efficiency plan, which consumer advocates say would cost residents nearly 30 percent in savings on utility bills and jeopardize 7,000 jobs.

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(Ameren Illinois / Facebook)

Residents in central and southern Illinois will pay nearly 30 percent more on utility bills than projected if Ameren is allowed to lower its energy savings target, environmental and consumer advocates said Wednesday.

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(Daniel X. O'Neil / Flickr)

Efficiency plans filed by Ameren Illinois fail to comply with the state’s new energy law and could prevent the creation of additional jobs, according to a new report. 

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The clean economy: What is it, and how is Chicago faring? A new report tells the story.

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(Courtesy of U.S. Department of Energy Office of Science)

Tweaking Illinois' landmark energy bill would trigger more than $2 billion in wind farm construction, a state senator says. 

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(Creative Commons /  © 2013, Jeremy Atherton)

Illinois Attorney General Lisa Madigan joined a group of 16 attorneys general last week in urging Congress to reject the rollback of standards that combat pollution and protect air quality.

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(Chicago Mayor's Office)

Mayor Rahm Emanuel announced Sunday a commitment to transition the city’s municipal buildings and operations to 100 percent clean and renewable energy by 2025.

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Illinois Attorney General Lisa Madigan (Chicago Tonight)

Illinois and nine other states are threatening to sue the Trump administration over delayed implementation of energy efficiency standards. 

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(Kārlis Dambrāns / Flickr)

Chicago is offering grant funding to cover up to 30 percent of equipment and installation costs for new direct current fast-charging stations, which can charge electric vehicles in 20 to 30 minutes. 

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(Solar Energy Industries Association)

Cook County is more than halfway through a multiyear project that aims to make solar energy more affordable for residents.