Science Friday Folgen

Do You Have The ‘Right Stuff’ To Be An Astronaut? If you’ve ever considered being an astronaut, this might be your chance to land that dream job. This week, NASA opened applications for a new class of astronaut candidates. It’s a full-time position based in Houston, Texas, paying over $104,000 per year. Job duties would include “conducting operations in space, including on the International Space Station (ISS) and in the development and testing of future spacecraft” and “performing extravehicular activities (EVA) and robotics operations using the remote manipulator system.” Please note that “substantial travel” is required.  How do you know if you have the ‘right stuff’ to apply?  Frank Rubio, a NASA astronaut who completed the most recent previous selection program in 2017, joins Ira to talk about what other qualities are valuable in an astronaut applicant—and the training program for those accepted.   Could A “Marsquake” Knock Down Your House? On April 6, 2019, NASA’s InSight Mars lander recorded a sound researchers had been waiting to hear for months. To the untrained listener, it may sound like someone had turned up the volume on the hum of Martian wind. But NASA researchers could hear the likely first-ever “marsquake” recorded by the mission. NASA’s InSight carries a suite of instruments to help study what’s happening deep within the Martian surface, including an ultra-sensitive seismometer (SEIS) for detecting suspected quakes on Mars. Now closing in on the end of it’s two-year primary mission, NASA scientists are studying the seismic data they’ve collected so far, comparing it to the well-known tectonic activity of Earth, and mapping out what to explore from here. Deputy principal investigator Suzanne Smrekar joins Ira to answer our pressing marsquake questions. New Insight Into Whales On The Go  Like the seasonal migrations of birds, whales are roamers. Every year, they travel thousands of miles, from the warm waters of the equatorial regions for breeding to the colder polar waters for feeding. But how do they find their way so consistently and precisely every year?  New research in Current Biology this month adds more weight to one idea of how whales stay on course: Similar to birds, whales may detect the Earth’s magnetic field lines. Duke University graduate student Jesse Granger explains why a strong connection between gray whale strandings and solar activity could boost the magnetoreception theory. Other research in Marine Mammal Science explores why whales leave the food-rich waters of the Arctic and Antarctic at all. Marine ecologist Robert Pitman of Oregon State University’s Marine Mammal Center explains why this annual movement may not be about breeding—but rather, allowing their skin to molt and remain healthy.  Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

A New Trick For Dexterity In Prosthetic Hands Researchers working on the next generation of prosthetic limbs have a few fundamental engineering problems to overcome. For starters, how can people using prosthetic limbs effectively signal what motions they want to perform?  A team of researchers may have a solution: A surgical technique that uses muscle tissue to amplify the nerve signals. Participants fitted with prosthetic hands after this surgery, described in Science Translational Medicine this week, reported being able to manipulate objects with a degree of control and dexterity not previously seen. Electrical engineer Cynthia Chestek at the University of Michigan explains why this muscle graft seems to be solving the engineering problem of reading nerve signals and what the next generation of prosthetic hands could be capable of.  Looking To The Genome To Track And Treat The New Coronavirus As of Thursday, March 5, Washington state has reported over 30 cases of COVID-19, the disease caused by the coronavirus, SARS-CoV-2. To better understand the pathogen and the disease, scientists have sequenced the genome of the virus from two of the patients. Kristian Andersen, an immunologist at Scripps Research who uses genomics to track the spread of diseases, discusses how the genetic information from these patients can help determine the spread of the virus globally. Plus, Ralph Baric, a coronavirus researcher at the University of North Carolina at Chapel Hill, talks about developing vaccine and drug candidates for COVID-19 and how the genomic sequences from this outbreak can be used to help create treatments. Can You Name That Call? Test Your Animal Sound Trivia Can you differentiate the cry of an Antarctic Weddell seal from the song of an emperor penguin? How about the bellows of a howler monkey from a warthog’s rumbling roar? The animal kingdom is filled with diverse calls and sounds, and for World Wildlife Day earlier this week on Tuesday, we curated them—in a quiz. SciFri’s digital producer Daniel Peterschmidt teamed up with Google Earth to create an interactive quiz that hops you around the world and highlights the many (sometimes surprising) sounds that species make. Daniel challenges Ira to an animal sound showdown.  Test your knowledge with the Science Friday Google Earth Animal Sound Quiz! What You Don’t Know About Well Water Could Hurt You Residents in Kansas who use private wells face uncertainty about what’s in their water. Environment and energy reporter Brian Grimmett for KMUW in Wichita tells us the State of Science.  A Human Trial For CRISPR Gene Therapy This week, researchers announced that they have started a clinical trial of a treatment that uses the CRISPR gene-editing technique on live cells inside a human eye. Plus a satellite rescue mission, parrot probability, and more in this week’s News Roundup. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

This week, the world’s attention has turned to the spread of the novel coronavirus, SARS-CoV-2, that was first detected in Wuhan, China, late in 2019. More countries are finding cases, and in the United States, a California patient has become the first known case of possible “community spread”—where the patient had not traveled to affected areas or had known exposure to someone who had been infected. On Tuesday, the Centers for Disease Control said Americans should prepare for “significant disruption” and “inevitable” spread of the virus in the U.S. And on Wednesday, President Trump announced that Vice President Mike Pence would head the country’s coronavirus response. But what does preparation actually look like for healthcare systems that will be on the frontlines of detecting and responding to any new cases? Ira talks to infection prevention epidemiologist Saskia Popescu and public health expert Jennifer Nuzzo about the practical steps of preparing for a new pathogen, including expanding testing and making sure healthcare workers have necessary protective equipment. Plus, they address why childcare, telecommuting, and community planning may be more important than face masks for individuals who are worried about what they can do. Facebook is a household name globally with nearly 2 billion users. Mark Zuckerberg’s goal was to connect the entire world online when he founded the company in 2006. But 14 years later, Facebook has evolved into more than a social media platform. The company has been involved in debates and scandals around user privacy, outside interference in elections, and the spread of fake news. Last summer, the Federal Trade Commission fined Facebook $5 billion for “repeatedly used deceptive disclosures and settings to undermine users’ privacy preferences in violation of its 2012 FTC order.” Journalist Steven Levy has been following Zuckerberg and the company since the beginning. In his new book Facebook: The Inside Story he chronicles Zuckerberg’s growth and data-driven approach and how that influenced the tactics the company applied to the problems that resulted from the platform. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.