Hear this week’s science news, with Nick Howe and Shamini Bundell. This week, a new 3D printer allows quick shifting between many materials, and understanding the link between gut microbes and liver disease.
In this episode:
00:46 A new dimension for 3D printers
A new nozzle lets a 3D printer switch between materials at a rapid rate, opening the door to a range of applications. Research Article: Skylar-Scott et al.; News and Views: How to print multi-material devices in one go
08:07 Research Highlights
The slippery secrets of ice, and cells wrapping up their nuclei. Research Highlight: Viscous water holds the secret to an ice skater’s smooth glide; Research Highlight: Super-thin layer of ‘bubble wrap’ cushions a cell’s nucleus
10:17 Linking bacteria to liver disease
Researchers have isolated a bacterial strain that appears to play an important role in alcoholic liver disease. Research paper: Duan et al.; News and Views: Microbial clues to a liver disease
17:10 News Chat
‘Megaconstellations’ of satellites concern astronomers, and a report on the gender gap in chemistry. News: SpaceX launch highlights threat to astronomy from ‘megaconstellations’; News: Huge study documents gender gap in chemistry publishing
…the Latin American food and cocktails at Seven Reasons—a mountain of black rice topped with prawns and pork cheeks, a salad in which the summery tang of tomatoes has been concentrated into cubes of jelly, a platter of hamachi tiradito whose pink and green splashes of salmon roe and jalapeño could hang in an art gallery—serve up jubilation as a remedy for pain and color as a cure for the blues. Is there almost too much packed into each bite? No one’s complaining. More-is-more extravagance is what makes Seven Reasons a fiesta you never want to stop.
Kathy O’Shaughnessy talks to Mariella about her novel charting the life of George Eliot.
The rise of technologies that help the elderly stay in their homes threatens to upend one of commercial real estate’s biggest bets: Aging baby boomers will leave their residences in droves for senior housing.



Chef’s Kitchen
Copenhagen’s legendary bicycle setup has been propelled by all of these aspirations, but the critical element is the simplest: People here eagerly use their bicycles — in any weather, carrying the young, the infirm, the elderly and


NPR’s Tamara Keith and Amy Walter of the Cook Political Report join Judy Woodruff to discuss the latest political news, including whether open hearings could change Americans’ minds about impeachment, implications for Joe Biden’s presidential campaign, the potential entry of Michael Bloomberg into the Democratic race, Sen. Amy Klobuchar’s comments about standards for female politicians and more.

