Science Friday Folgen

Have you ever been stuck in traffic and thought, if only this highway was a little wider so it could fit more cars? You aren’t alone.Many states have been expanding their highways. New York Governor Kathy Hochul recently announced a $1.3 billion project to expand one of the state’s highways for an estimated maximum six-minute travel savings. Other highway-widening projects are underway in Texas, California, and Maryland. In 2022, federal, state, and local governments in the US spent $127 billion on highway construction. Some departments of transportation say expanding highways is necessary to reduce congestion, especially in areas with growing populations, and to encourage economic development.But decades of research shows the opposite effects when highways are expanded—that travel times actually increase when more lanes are added. So how does this happen, and why do we keep expanding highways even though the research says it doesn’t work?Megan Kimble, journalist and author of City Limits: Infrastructure, Inequality, And The Future Of America’s Highways, joins Ira to break down the research behind highway widening and discuss how increasing funding for public transit could help make traffic better, and why some cities are deciding to remove their highways entirely.Read an excerpt from City Limits: Infrastructure, Inequality, And The Future Of America’s Highways.Transcript for this segment will be available after the show airs on sciencefriday.com. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

Abortion was on the ballot in 10 states, and seven of them passed constitutional amendments defending abortion rights. Also, this ginormous number has a whopping 41,024,320 digits, which isn’t very helpful for mathematicians but is certainly exciting for math nerds.Seven States Passed Ballot Measures To Protect Abortion RightsThis week, science was on the ballot in many states. Voters across the country weighed in on issues like drug legalization, money to fund climate programs, and, of course, abortion rights. Ten states voted on the issue, and in seven of them, voters chose to protect or expand abortion rights. Those states are Maryland, Montana, Nevada, New York, Colorado, Arizona, and Missouri. On the flip side, voters in Florida, Nebraska, and South Dakota rejected measures that would protect abortion rights.Ira Flatow talks with Tim Revell, executive editor at New Scientist, about the outcome of some sciencey ballot measures and what we can expect going into another Trump presidency. They also discuss the launch of the world’s first wooden satellite, what scientists learned when they put vampire bats on a treadmill, and more.Math Enthusiast Finds The Largest Known Prime NumberLet’s go back to grade school—do you remember learning about prime numbers? They’re numbers that can only be divided by themselves and one.So 2, 3, 5, 7, 11, and so on are prime numbers. The number 12, for example, wouldn’t be prime because you can divide it by other numbers, like 2 and 3. And as you count up and up, prime numbers become more sparse.Math lovers are always competing to find the largest prime number, and just recently, an engineer discovered the largest one—so far. And you won’t believe how ginormous it is: It has more than 41 million digits.Ira talks with Jack Murtagh, math writer and columnist for Scientific American, about why prime numbers are so cool, and the quest to find the largest one.Transcripts for each segment will be available after the show airs on sciencefriday.com. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

Author and naturalist Sy Montgomery discusses chicken intelligence and her experience raising a flock in New Hampshire. And, snapshots from over the years could provide researchers with valuable data about how penguin colonies have shifted.Chickens Have Friendships, Memories, And ReputationsChickens don’t exactly have a reputation of being the sharpest creatures in the animal kingdom. Yet, talk to anyone who raises chickens and they’ll tell you that they are far more intelligent and social than we often give them credit for. For example, chickens can recognize the faces of 100 other chickens and find their way home just days after birth.Guest host Rachel Feltman talks with Sy Montgomery, author of the new book, What the Chicken Knows: A New Appreciation of the World’s Most Familiar Bird, about her own flock and what she’s learned about chicken intelligence.Tourist Photos From Antarctica May Help Map Penguin ColoniesIf you’re lucky enough to visit Antarctica, you’ll probably aim to snag a classic photo—a colony of penguins, set against the chilly, barren landscape. But now, in addition to being a cherished memory, those pictures could turn out to be a valuable source of ecological data.Writing in the journal PLOS One, researchers describe a computer vision technique that uses elevation data combined with landscape features in photographs to allow the images to be positioned in a 3D rendering of the Antarctic landscape. And that allows scientists to map the precise boundaries of penguin colonies over time, even without knowing who held the camera or where the photographer was standing.Dr. Heather Lynch, the Institute for Advanced Computational Science Endowed Professor of Ecology & Evolution at Stony Brook University, joins guest host Rachel Feltman to discuss the technique, and the value in being able to extract scientific data from pictures stored in photo albums and museum archives.Transcripts for each segment will be available after the show airs on sciencefriday.com. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.