Sinopse
Leading science journalists provide a daily minute commentary on some of the most interesting developments in the world of science. For a full-length, weekly podcast you can subscribe to Science Talk: The Podcast of Scientific American . To view all of our archived podcasts please go to www.scientificamerican.com/podcast
Episódios
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Bacteria Lowers Mosquito Transmission of Malaria, Dengue
31/10/2014 Duração: 01minMosquitoes that harbor a soil microbe called Chromobacterium Csp_P have a harder time catching dengue virus and the malarial parasite. Christopher Intagliata reports
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Mammals Might Have Slept Through Dino Destroyer
30/10/2014 Duração: 01minThe ability to engage in extended hibernation might be what saved ancestral mammals from extinction at the end of the Cretaceous period. Karen Hopkin reports
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Online Personalization Means Prices Are Tailored to You, Too
28/10/2014 Duração: 03minChristo Wilson, a computer scientist at Northeastern University, says prices online are "super subjective" and vary according to your past clicks and purchases or whether you are shopping on a mobile phone. Christopher Intagliata reports. Learn more about your ad choices. Visit megaphone.fm/adchoices
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Fecal Transplanters Fish Out Key Ingredient
22/10/2014 Duração: 01minThe bacterium Clostridium scindens, a member of the gut’s microbiome, appears to ward off the hospital-acquired infection C. difficile. Christopher Intagliata reports
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Coyote Size Forces Smartness
21/10/2014 Duração: 02minTopping out at about 20 kilograms, a coyote has to be able to hunt both smaller and bigger prey, and avoid being prey itself, a combination that selects for intelligence. Steve Mirsky reports
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Plant Thorns Increase When Defense Needed
17/10/2014 Duração: 02minIn areas with few herbivores acacia plants don't bother to churn out many of the off-putting thorns. Cynthia Graber reports Learn more about your ad choices. Visit megaphone.fm/adchoices
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Lemur Latrine Trees Serve as Community Bulletin Boards
16/10/2014 Duração: 03minPrimatologists spent almost 1,100 hours watching lemurs do their business on their designated tree and concluded that urine and glandular secretions serve as posted messages. Steve Mirsky reports Learn more about your ad choices. Visit megaphone.fm/adchoices
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Carnivorous Plant Inspires Anticlotting Medical Devices
15/10/2014 Duração: 01minBy copying aspects of the slick surfaces of insect-catching pitcher plants, researchers created tubes that can carry blood without promoting the formation of blood clots or bacterial attachment. Cynthia Graber reports
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Less Well-Off Donate Bigger Income Percentage
13/10/2014 Duração: 01minWealthier people on average gave a lower percentage to charity in 2012 than they did in 2006, while the less affluent increased their giving. Cynthia Graber reports
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To Walk, You Have to Fall in Step
09/10/2014 Duração: 01minMotion-capture technology reveals that the body falls forward and sideways as we walk, and the feet come down to restore balance. Karen Hopkin reports
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2014 Nobel Prize in Chemistry
08/10/2014 Duração: 02minEric Betzig, Stefan W. Hell and William E. Moerner share the 2014 chemistry Nobel for the development of super-resolved fluorescence microscopy, which has enabled the study of single molecules in ongoing chemical reactions in living cells. Steve Mirsky reports
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2014 Nobel Prize in Physics
07/10/2014 Duração: 01minIsamu Akasaki, Hiroshi Amano and Shuji Nakamura share the physics Nobel for the invention of efficient blue light–emitting diodes, which has enabled bright and energy-saving white light sources. Steve Mirsky reports
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2014 Nobel Prize in Physiology or Medicine
06/10/2014 Duração: 02minJohn O'Keefe, May-Britt Moser and Edvard I. Moser share the prize for their discoveries of cells that constitute a positioning system in the brain. Steve Mirsky reports
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Reindeer Spit Smacks Down Plant Toxins
03/10/2014 Duração: 01minCompounds in reindeer and moose saliva interfere with the production of toxins in plants that ordinarily stop animals from dining on the vegetation. Karen Hopkin reports
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Good Palm Oil Yields Could Be Bad News
02/10/2014 Duração: 01minIncreased palm oil yields could unintentionally have the effect of creating a bigger demand for land for even more palm oil planting. Cynthia Graber reports
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Central Park Features Worldwide Soil Microbes
01/10/2014 Duração: 02minThe soil in Manhattan's Central Park contains microbial life that also exists in deserts, frozen tundra, forests, rainforests and prairies. Steve Mirsky reports Learn more about your ad choices. Visit megaphone.fm/adchoices
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Sea Garbage Shows Ocean Boundaries
30/09/2014 Duração: 01minFloating refuse reveals ocean currents that in turn show where the world's oceans mix and where they stay relatively discrete. Karen Hopkin reports
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Yeast Coaxed to Make Morphine
29/09/2014 Duração: 01minGenetically manipulated yeast can produce morphine that could help get around the problems with poppy crops, which include climate, disease and war. Karen Hopkin reports
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Crustal Chemistry May Aid in Earthquake Prediction
25/09/2014 Duração: 01minResearchers say chemical changes in groundwater may someday be used to predict quakes four to six months in advance. Christopher Intagliata reports
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Fire Cooked Up Early Human Culture
24/09/2014 Duração: 02minAn anthropologist studying current hunter–gatherers finds that nighttime around the fire is when conversation turns from business to bonding. Cynthia Graber reports Learn more about your ad choices. Visit megaphone.fm/adchoices