Science Friday Folgen

Long before we walked the Earth, bacteria took it over. They’re in every ecosystem on the Earth, and researchers have hopes to someday find them on other planets. The tiny cells have even helped make our atmosphere oxygen-rich and liveable. But do bacteria—numerous and adaptable as they are—ever go extinct? New research suggests they do.  Facial recognition systems—the type of technology that helps you tag your friends on Facebook—is finding its way offline and into real world environments. Some police departments are using the technology to help identify suspects and companies are marketing face-identifying software to schools to increase security. But a study found that facial recognition algorithms lacked in accuracy when it came to assessing different genders and skin tones.  If you want to study something, the best way to do it is to go straight to the source. That goes for bodies in our solar system as well. Over the last several decades, NASA has sent space probes to study Mars, Saturn, Jupiter, Venus, Pluto, and the objects beyond them. And on August 11th, NASA will launch the Parker Solar Probe, the latest mission to study our nearest star—and every other star in the universe. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

For decades, physicists trying to uncover the large and small structures of the universe have been coming up empty—no evidence of supersymmetry at the Large Hadron Collider, no dark matter particles, no new evidence explaining dark energy. That’s the main conundrum in theoretical physicist Sabine Hossenfelder’s book, Lost in Math: How Beauty Leads Physics Astray. She talks with Ira about the problems facing physics, and where new ideas could come from. This week, Alan Alda spoke publicly about living with Parkinson’s Disease for the first time since his diagnosis three and a half years ago. He’s known for his work as an actor, author, and science communicator. He joins Ira to discuss his life since his diagnosis. A six-year old Pittsburgh area boy underwent radical surgery in an attempt to treat a seizure-causing brain tumor. The boy’s entire occipital lobe and and much of his temporal lobe were removed—material that added up to about one-sixth of his total brain matter. Now, researchers report that the boy is living a surprisingly normal life despite the missing brain matter.   It’s a common tale. Homeowners affected by flooding receive insurance money and rebuild their homes, only to have yet another flood strike and damage the property again. In recent years, however, New Jersey has modified an open-space program to allow the state to offer buyouts to some homeowners in flood-stricken areas, offering the pre-flood assessed value of the property.  Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

Many ant species have a queen, the member of the colony that lays eggs. The rest of the ants are divided into different roles that support the queen and the colony. So what ants become queens versus workers? Scientists found that the gene ilp2 that regulates insulin played a role in determining what ant becomes the queen. Biologist Ingrid Fetter-Pruneda talks to John Dankosky about how this gene works in determining a queen. The Rocky Fire and the Jerusalem Fire scorched nearly 100,000 acres in northern California in July and August of 2015… and when the prevailing winds were right, smoke drifted all the way down into the San Francisco Bay Area. That’s when locals began tweeting their observations. Now, scientists at the U.S. Forest Service have analyzed 39,000 tweets like these from the 2015 wildfire season, and found that social media data can be a reliable way to augment existing air quality monitoring data in predicting the extent—and the public health effects—of wildfire smoke. Sonya Sachdeva joins Science Friday to talk about how tweets can be a useful tool in tracking wildfires. Plus: Earlier this month, a cloud of dust rolled into the atmosphere above Texas and the Gulf Coast. It was a remnant of a storm blown over from the Saharan desert. But, according to a new study, that Saharan dust also brings with it a silver lining—it suppresses the formation of major storms. Bowen Pan joins John Dankosky to explain why a dusty atmosphere could mean a less severe hurricane season. Researchers have been scouring Mars for water since the early 1970s. Since then, they’ve found frozen water in the poles of Mars as well as trace amounts locked up in Martian soil, but nothing liquid—until this past week. A team of scientists from Italy’s National Institute of Astrophysics announced in Science they found liquid water underneath the glaciers of the planet’s south pole. Angel Abbud-Madrid joins John to talk about how the researchers found the liquid water and what this discovery means for future Martian water research, and Bonnie Meinke tells SciFri the best ways to see Mars as it will be the closest it’s been to Earth in 15 years.   Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.