A new printing technique designed at Harvard University’s engineering school uses sound waves to control and fire droplets from a nozzle with incredible force, allowing researchers to print with liquids thicker and more viscous than ever before.
Honey, stem-cell-based inks and liquid metals all printed fluidly using these vibrations, which come from acoustic techniques that researchers had previously used to levitate liquids, not print with them.
The new technique was described in a paper published Aug. 31 in the journal Science Advances.
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A new printing technique uses sound waves to control and fire droplets from a nozzle with incredible force.Daniele Foresti/Jennifer A. Lewis / Harvard University
This story was originally published by Yale Environment 360 and is reproduced here as part of the Climate Desk collaboration.
It has been a year since China jammed the works of recycling programs around the world by essentially shutting down what had been the industry’s biggest market. China’s National Sword policy, enacted in January 2018, banned the import of most plastics and other materials headed for that nation’s recycling processors, which had handled nearly half of the world’s recyclable waste for the past quarter century. The move was an effort to halt a deluge of soiled and contaminated materials that was overwhelming Chinese processing facilities and leaving the country with yet another environmental problem—and this one not of its own making.
In the year since, China’s plastic imports have plummeted by 99 percent, leading to a major global shift in where and how materials tossed in the recycling bin are being processed. While the glut of plastics is the main concern, China’s imports of mixed paper have also dropped by a third. Recycled aluminum and glass are less affected by the ban.
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Recycled materials being stacked at a facility in Costa Rica last June.
My college strength and conditioning coach, Mark Watts, taught me an important lesson about how to be thankful that applies to life outside of the gym as well as inside it…
As adults, we spend a lot of time talking about all of the things that we have to do.
You have to wake up early for work. You have to make another sales call for your business. You have to work out today. You have to write an article. You have to make dinner for your family. You have to go to your son’s game.
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This article is an excerpt from Atomic Habits, my New York Times bestselling book. Photo by Jason Leung on Unsplash.
A gigantic solar storm hit Earth about 2,600 years ago, one about 10 times stronger than any solar storm recorded in the modern day, a new study finds.
These findings suggest that such explosions recur regularly in Earth’s history, and could wreak havoc if they were to hit now, given how dependent the world has become on electricity.
The sun can bombard Earth with explosions of highly energetic particles known as solar proton events. These “proton storms” can endanger people and electronics both in space and in the air.
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The sun can bombard Earth with explosions of highly energetic particles.Victor Habbick Visions / Science Photo Library/Getty Images
Is This the Neighborhood New York Deserves? You can see it on the skyline or along the Hudson River, upending Manhattan’s silhouette.
During the last half dozen years, it has materialized almost like a mirage, levitating above more than a dozen gritty acres of working rail tracks on the Far West Side.
The largest mixed-use private real estate venture in American history,it is called Hudson Yards.
The first massive tower emerged at the apex of the High Line, looming over it, a shingled, spiky, reflective blue-glass behemoth, shaped by eccentric cuts and angles as if sheared by a giant Ginsu knife.
Since then, at jaw-dropping magnitudes you can’t begin to grasp until you are actually standing there, Hudson Yards has sprouted a seven-story, 720,000-square-foot shopping mall. There are also four more supertall skyscrapers as well as a $500 million city-sponsored arts center called the Shed, featuring a giant sliding roof, eye–catching swathed in a tufted Teflon-based sheeting that can bring to mind inflated dry cleaning bags.
Fifty-four years after it was sold by looters, an ancient Maya pictographic text was judged authentic by scholars Thursday.
Mexico’s National Institute of History and Anthropology said the calendar-style text was made between 1021 and 1154 A.D. and is the oldest known pre-Hispanic document.
The 10 surviving pages of the tree-bark folding “book” will now be known as the Mexico Maya Codex. It had been known as the Grolier Codex. It may have originally had 20 pages, but some were lost after centuries in a cave in southern Chiapas state.
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This undated photo released by Mexico’s National Anthropology and History Institute (INAH) shows an ancient Maya pictographic text that has been judged authentic by scholars in Mexico City.INAH via AP
A 15-year-old entrepreneur is keeping business hot with her special sauce.
Tyla-Simone Crayton, 15, is CEO of Sienna Wings. “My sauce has the potential to be even greater than ketchup,” Tyla-Simone told SWNS. “Not only does it taste great, but it’s healthy because it is gluten-free and high-fructose corn syrup free.”
She added: “I got the idea originally because my favorite wing place closed down in New York City. I loved the hot sauce they offered there so I went home and tried to recreate the flavor.”
Film and Writing Festival for Comedy. Showcasing best of comedy short films at the FEEDBACK Film Festival. Plus, showcasing best of comedy novels, short stories, poems, screenplays (TV, short, feature) at the festival performed by professional actors.