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Plog On

Plogging, Sweden’s latest fitness craze, is catching on in Europe and the U.S., as joggers not only clean up trash but also burn more calories in the process.

Hyperloop Hyper-Speed

Plans are underway in Europe for a vacuum-tube mode of transport capable of zooming people and freight safely overland at 700 miles per hour.

Big Melt

A thaw over the tip of the planet this year warmed the surface of the North Pole as high as 35 degrees—a once-rare event that has occurred during four of the last five winters.

Sinking City

By factoring in the settling of artificial landfill as water aquifers empty, scientists now estimate that 166 square miles of land around the bay is in jeopardy of being underwater by 2100.

Rethinking Toiletries

It’s easy to load up on pricey personal care products that ultimately get little use, but a few key strategies can simplify daily life as well lower expenses and waste.

Meat Menace

New data shows that emissions from raising farmed animals make up about 15 percent of global human-induced emissions, with three large meat producers emitting as much as some oil companies.

Loving It

McDonald’s says it will end the use of harmful polystyrene foam packaging globally by year’s end, and Dunkin’ Donuts is phasing out its polystyrene foam cups in favor of paper cups.

In Vitro Corals

Frustrated by vanishing reefs, scientists are fertilizing coral sperm and eggs in labs and returning them to the wild.

Algae Alchemy

Two Dutch designers are processing live algae into material that can be used for 3-D printing of such items as shampoo bottles and trash bins.

Pooch Patrol

Thailand’s stray dogs could become community watches with a new “smart vest” that transmits videos of what a barking dog sees.