Topic: Genetics & Evolution

January 27, 2017 Crowd-sourcing Better Tomatoes - Researchers turn to panels of taste testers to identify key flavor chemicals lost during the past 100 years of commercial tomato breeding.
January 23, 2017 Mapping Extinct Brains - Scientists scanned preserved brains of extinct Tasmanian tigers in an attempt to better understand their behavior and life history.
January 2, 2017 Arctic Camels - Camels seem perfectly suited to life in the desert, but they may have evolved those traits in the high Arctic.
December 30, 2016 Sizing Up Dogs II - A listener asks whether it's true that large dogs don't live as long as small dogs.
December 14, 2016 Carbon Monoxide Antidote - Researchers develop the first fast-acting antidote for carbon monoxide poisoning.
December 13, 2016 Pollution-Tolerant Fish - The Atlantic killifish has evolved the ability to survive in toxic waters.
December 7, 2016 Binge Drinking Teens - Could teenage binge drinking have effects on the next generation, even if they’re never exposed to alcohol?
December 2, 2016 Fruit Flies & Beer - Beer owes its distinctive aroma to fruit flies.
November 8, 2016 Ivory Forensics - Chemical analysis of poached ivory reveals that elephant slaughter is massive and recent.
November 4, 2016 Smoking Gene Mutations - Researchers discover that the DNA mutations by which smoking causes cancer are more complicated than previously thought.
October 31, 2016 Chimpanzees & Bonobos - Even though the Congo River keeps them apart today, chimpanzees and bonobos managed to interbreed several times in the past.
October 25, 2016 GM Tobacco vs. Malaria - Genetically engineered tobacco plants produce potent artemisinin - a highly effective malaria drug - at a fraction of the usual cost.
October 24, 2016 Right-Handed Fossil - Analysis of a nearly two million-year-old jaw fossil from east Africa reveals clues to the evolution of the human brain.
October 18, 2016 Sickle Cell Gene Editing - Scientists use a powerful new gene editing tool to treat sickle cell disease.
October 17, 2016 Feather Mystery Solved - The berries of invasive honeysuckle plants are causing birds in eastern North America to change color.
September 19, 2016 Black Pig Preferences - Across the globe, humans have selected pigs with genetic mutations for black coats.
September 14, 2016 Environmental DNA Collection - Conducting a census of species using environmental DNA.
September 12, 2016 Giraffe Genetics - A DNA analysis reveals that giraffes make up four different species instead of just one.
September 7, 2016 Caffeine Genetics - A gene variant makes some people feel a buzz from very little caffeine.
August 19, 2016 Mouse Models of Addiction - New strains of lab mice are helping scientists understand complex disorders.
August 17, 2016 Living Fossil Squirrel - Scientists search for an arboreal African rodent that’s changed little in over thirty million years.
August 3, 2016 Smoke Resistance - A random mutation allowed our ancestors to stay relatively healthy despite exposure to toxic woodfire smoke.
July 29, 2016 Targeting Aggressive Cancers - Using genetic fingerprinting to diagnose and treat an aggressive cancer.
July 27, 2016 Death, Cannibalism, & Speciation - Microbes passed from generation to generation cause all male babies of an African butterfly to die, influencing evolution.
July 26, 2016 3D Genome - How our DNA’s shape is key to its function.
June 28, 2016 Aging Monkeys - How do other primates’ social lives change as they age?
June 23, 2016 Birds, Litter, & Novelty - How do crows and other birds calculate the risks and benefits of human-dominated urban environments?
June 20, 2016 Snake Evolution - Some unrelated snake species have evolved major similarities even though they live halfway around the world from each other.
June 9, 2016 Giraffe Genome - Scientists have sequenced the genome of the giraffe, looking for key differences in their DNA that allows them to tower above all other animals.
June 6, 2016 Dog Genome - Today’s dogs may have arisen from two different wolf populations, on opposite sides of Eurasia.
June 3, 2016 Ant Payola - A Central American tree indirectly pays its ant security system with sweet syrup.
May 30, 2016 Rattlesnakes & Squirrels - Rattlesnake venom is more potent against local ground squirrels than those from other locales.
May 23, 2016 Red Bird Genetics - Scientists uncover the genes behind birds’ flashy red plumage.
May 3, 2016 Neandertal vs. Human Diets - By using more sophisticated technology to deal with a harsh and unpredictable Ice Age climate, modern humans may have been more successful at finding food than Neandertals.
May 2, 2016 Fraternal Twin Genetics - Scientists pinpoint two genes that help explain why fraternal twins are common in some extended families and not in others.
April 19, 2016 Dino Chicken - Scientists switch off genes in chickens to learn about dinosaurs.
April 14, 2016 Armadillo Vision - The armadillo’s poor eyesight is helping researchers understand the genes behind certain forms of blindness.
April 7, 2016 Pachyderms get the Point - Elephants, unlike mammals much more similar to us, seem to instinctively understand pointing gestures.
March 9, 2016 World Champion Dragonflies - One species of dragonfly traverses vast oceans to breed.
March 1, 2016 Podcast for 5 August 2011 - BATS & DOLPHINS (Encore Presentation): Dolphins that heal themselves, and dolphins that use electroreception in addition to echolocation. Also, How vampire bats find their prey, and how a Cuban plant takes advantage of a bat's ability to echolocate.
February 23, 2016 Giant Armadillos - DNA evidence reveals that the enormous armored glyptodont, an extinct South American mammal, was a close cousin to modern armadillos.
February 15, 2016 Neandertal Legacy - Neandertals contributed to genetic risk factors for some of today’s health problems and even mood disorders in people of European and Asian descent.
February 11, 2016 Race & Genetics Research - Some researchers argue that the concept of race should be eliminated from genetic studies.
January 27, 2016 Hares & Climate Change - Snowshoe hares can’t help turning white in winter, even though climate change is delaying the first snowfall, making them easy prey.
January 6, 2016 Bee Maps - A first-ever national bee map reveals where native bees are most in need of help.
January 5, 2016 Nesting Dogs - A listener asks why dogs sometimes turn around in circles before lying down.
January 1, 2016 Top Science Breakthrough of 2015: CRISPR Gene Editing - The top Science Breakthrough of the Year: A low-cost genetic engineering technique is creating both excitement and concern.
December 31, 2015 Science Breakthroughs of 2015: Kennewick Man’s DNA - Science Breakthroughs of 2015: Kennewick Man’s 8,500-year-old bones are finally sequenced, revealing his genetic ancestry.
December 29, 2015 Science Breakthroughs of 2015: Homo Naledi - Science Breakthroughs of 2015: The discovery of an extinct human species in a South African cave made headlines this year.
December 25, 2015 Saliva & Survival - A simple saliva test of antibody levels may serve as a marker for general health.