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Physics explains why humans can walk through crowded places and not spill their coffee

Physics World

Ying-Cheng Lai , Brent Wallace and colleagues have studied the coffee-sloshing process using a mathematical cart–pendulum model, which describes the system as mass that hangs on a string beneath a moving cart. Now, the Arizona team has used their cart–pendulum model to gain further insights into this transition.

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Wastequip commits to further reducing its virgin resin use

Environmental News Bits

Wastequip, the company behind Toter containers and other waste-handling equipment brands, is moving forward with efforts to cut one-quarter of the virgin resin it uses throughout its entire cart manufacturing process.

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First fully solar-powered compost facility opens in California

Inhabitant

California state law (SB 1383) takes effect January 1, 2022, requiring the majority of homes and businesses in the area to recycle all food and yard waste in their yard debris carts.

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She tried to avoid plastic while grocery shopping for a week. Here’s how it went

Environmental News Bits

I didn’t see the thin plastic thread running between one leaf on my pineapple and its tag when I put the pineapple in my shopping cart, when I checked out or when I unpacked groceries at home. Read the full story at NPR.

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Designers used e-scooters tossed in rivers to make furniture, proving junk can find purpose

Environmental News Bits

Like many urban waterways, they are strewn with discarded shopping carts, bikes, and dead electric scooters that have been sitting in the water for as long as two years. Read the full story at Fast Company. The canals of Malmö, Sweden, hold all kinds of oddities.

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Why bad design can actually be good

Environmental News Bits

A wobbly shopping cart, a flimsy potato peeler, a puzzling highway sign: These are common nuisances. Read the full story in Fast Company. When a design doesn’t work, it often draws more attention to itself than when it works perfectly.

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UN Conference on Water Aims to Rally Support for Ambitious Goals

Circle of Blue

His cart is a crucial supply line to communities beset by water insecurity. Global water challenges headline gathering in New York City this week. Ujang delivers water to customers in the poor neighborhoods of North Jakarta.