Episode – 1925 : The Year 1925 Podcast Transcript If you look at the grand sweep of human history, there are centuries where seemingly little happens, and there are decades […]
Episode – 1913 : Questions and Answers: Volume 35
Episode – 1913 : Questions and Answers: Volume 35 Podcast Transcript October is here. Up here in the northern hemisphere, the leaves are changing color, the air is cooler, and […]
Episode – 1908 : A History of Soap and Detergent
Episode – 1908 : A History of Soap and Detergent Podcast Transcript Sometime in the last 24 hours, most of you have used soap or detergent, either directly or indirectly. […]
Episode – 1898 : Dendrochronology
Episode – 1898 : Dendrochronology Podcast Transcript One of the most essential aspects of archeology is dating objects from the past, and one of the most critical tools in dating […]
Episode – 1897 : Star Wars
Episode – 1897 : Star Wars Podcast Transcript A long time ago in a city far, far away…. A young director with several films under his belt had an idea […]
Episode – 1894 : The Never Ending Voyager Missions
Episode – 1894 : The Never Ending Voyager Missions Podcast Transcript In 1977, NASA took advantage of a once-in-a-lifetime alignment of the planets to send two probes to the outermost […]
Episode – 1893 : Leonardo da Vinci
Episode – 1893 : Leonardo da Vinci Podcast Transcript On April 15, 1452, a child was born in the village of Vinci, which was then part of the Republic of […]
Episode – 1884 : Energy, Work, and Power
Episode – 1884 : Energy, Work, and Power Podcast Transcript Everything we know in the world is ultimately dependent on energy. Energy fuels our bodies as well as our civilization. […]
Episode – 1883 : Questions and Answers: Volume 34
Episode – 1883 : Questions and Answers: Volume 34 Podcast Transcript September is upon us. It means going back to school and the autumnal equinox. The days get shorter in […]
Episode – 1879 : Starlite: The Miracle That Never Was
Episode – 1879 : Starlite: The Miracle That Never Was Podcast Transcript In the 1980s, an Englishman named Maurice Ward developed a material that he claimed could withstand temperatures of […]
Episode – 1864 : The Fibonacci Sequence and the Golden Ratio
Episode – 1864 : The Fibonacci Sequence and the Golden Ratio Podcast Transcript Two of the most important concepts that can be found in the world of mathematics and nature […]
Episode – 1863 : Amateur Radio
Episode – 1863 : Amateur Radio Podcast Transcript The early days of radio were like the wild west. There were no rules, and that lack of rules often led to […]
Episode – 1860 : The Soviet Bomb
Episode – 1860 : The Soviet Bomb Podcast Transcript On August 29, 1949, the Soviet Union successfully tested its first atomic bomb. The announcement shocked the world, especially the United […]
Episode – 1837 : Australian Wildlife
Episode – 1837 : Australian Wildlife Podcast Transcript Australia is unique among the countries in the world. It is a continent, a country, and an island all wrapped up into […]
Episode – 1832 : The Fundamental Forces of Nature
Episode – 1832 : The Fundamental Forces of Nature Podcast Transcript Everything in the universe, from galaxies to the atoms in your body, is driven by just a few fundamental […]
Episode – 1828 : Transistors
Episode – 1828 : Transistors Podcast Transcript One of the most important inventions of the 20th century was the transistor. Prior to the transistor, electronic devices were bulky and dependent […]
Episode – 1810 : Grass and Lawns
Episode – 1810 : Grass and Lawns Podcast Transcript One of the most common types of plants in the world is grass. Grass is almost everywhere. An enormous part of […]
Episode – 1807 : Desalination
Episode – 1807 : Desalination Podcast Transcript Seventy percent of the Earth’s surface is covered with water… and the vast majority of it is useless for consumption or agriculture. This […]
Episode – 1799 : How the Ancients Made Fire
Episode – 1799 : How the Ancients Made Fire Podcast Transcript One of the most critical developments in the course of human history was the control of fire. Without fire, […]
Episode – 1797 : The History of Surgery
Episode – 1797 : The History of Surgery Podcast Transcript Over the years, human life expectancy has increased dramatically. While there have been many developments that have led to longer […]