Magazine

Wastewater is an asset – it contains nutrients, energy and precious metals, and scientists are learning how to recover them

Yalin Li, Colorado School of Mines Most people think as little as possible about the wastewater that is produced daily from their showers, bathtubs, sinks, dishwashers and toilets. But with the right techniques, it can become a valuable resource. On average, every Americans uses about 60 gallons of water per day for purposes that include …

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Plastic bag bans can backfire if consumers just use other plastics instead

Rebecca Taylor, University of Sydney Governments are increasingly banning the use of plastic products, such as carryout bags, straws, utensils and microbeads. The goal is to reduce the amount of plastic going into landfills and waterways. And the logic is that banning something should make it less abundant. However, this logic falls short if people …

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Fossil fuels are bad for your health and harmful in many ways besides climate change

Noel Healy, Salem State University; Jennie C. Stephens, Northeastern University, and Stephanie Malin, Colorado State University Many Democratic lawmakers aim to pass a Green New Deal, a package of policies that would mobilize vast amounts of money to create new jobs and address inequality while fighting climate change. Led by Rep. Alexandria Ocasio-Cortez and Sen. …

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Utilities are starting to invest in big batteries instead of building new power plants

Jeremiah Johnson, North Carolina State University and Joseph F. DeCarolis, North Carolina State University Due to their decreasing costs, lithium-ion batteries now dominate a range of applications including electric vehicles, computers and consumer electronics. You might only think about energy storage when your laptop or cellphone are running out of juice, but utilities can plug …

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How energy efficiency delivers green dividends in red and blue states

David Cash, University of Massachusetts Boston The Green New Deal, a bundle of proposed policies that would combat climate change, create green jobs and address economic inequities, is eliciting the usual partisan debate over what to do about global warming. But one humble and noncontroversial way to reduce carbon pollution has been gathering steam in …

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How urban agriculture can improve food security in US cities

Miguel Altieri, University of California, Berkeley During the partial federal shutdown in December 2018 and January 2019, news reports showed furloughed government workers standing in line for donated meals. These images were reminders that for an estimated one out of eight Americans, food insecurity is a near-term risk. In California, where I teach, 80 percent …

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Why stop at plastic bags and straws? The case for a global treaty banning most single-use plastics

Anastasia Telesetsky, University of Idaho Single-use plastics are a blessing and a curse. They have fueled a revolution in commercial and consumer convenience and improved hygiene standards, but also have saturated the world’s coastlines and clogged landfills. By one estimate 79 percent of all plastic ever produced is now in a dump, a landfill or the …

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Capturing carbon to fight climate change is dividing environmentalists

Olúfẹ́mi O. Táíwò, Georgetown University and Holly Jean Buck, University of California, Los Angeles Environmental activists are teaming up with fresh faces in Congress to advocate for a Green New Deal, a bundle of policies that would fight climate change while creating new jobs and reducing inequality. Not all of the activists agree on what …

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