Episode – 1339 : The Discovery of DNA Podcast Transcript One of the most important advancements in the 20th century was the identification of the structure of the DNA molecule.However, […]
Episode – 1293 : The History of Lead
Episode – 1293 : The History of Lead Podcast Transcript Sometime around eight to nine thousand years ago, ancient people in Asia Minor found a very dull grey metal that […]
Episode – 1273 : Salt
Episode – 1273 : Salt Podcast Transcript One of the most important substances throughout world history has been salt. Salt might seem mundane, but it is actually necessary for the […]
Episode – 1272 : The Black Death
Episode – 1272 : The Black Death Podcast Transcript During the 14th century, the world saw one of its most traumatic episodes. A plague spread through Asia, Europe, the Middle […]
Episode – 1256 : Copper
Episode – 1256 : Copper Podcast Transcript When humans first learned how to work with metal, the very first metal they used was copper. Copper was easy to shape, easy […]
Episode – 1245 : Questions and Answers: Volume 13
Episode – 1245 : Questions and Answers: Volume 13 As I approached the bridge, the old bridgekeeper said to me, “Who would cross the Bridge of Death must answer me […]
Episode – 1231 : The Element Mercury
Episode – 1231 : The Element Mercury Podcast Transcript Since the dawn of human history, humans have been aware of a seemingly miraculous substance. It was a substance that had […]
Episode – 1209 : What is Calculus?
Episode – 1209 : What is Calculus? Podcast Transcript As early as 2400 years ago, Greek philosophers were coming up with paradoxes that seemingly had no solution. Early mathematicians came […]
Episode – 1189 : Antibiotics
Episode – 1189 : Antibiotics Podcast Transcript One of the biggest changes to humanity over the last 100 years has been the increase in life expectancies. One of the biggest […]
Episode – 1184 : The Nobel Prize
Episode – 1184 : The Nobel Prize Podcast Transcript On December 10, 1896, the Swedish inventor Alfred Nobel passed away. In his will, he gifted most of his estate for […]
Episode – 1180 : Nitrogen
Episode – 1180 : Nitrogen Podcast Transcript If aliens were to look at the Earth through a telescope from far away and analyze our atmosphere, they would find that the […]
Episode – 1143 : Oxygen
Episode – 1143 : Oxygen Podcast Transcript All around you, in the air and the ground, is the most common element on Earth: Oxygen. As you are certainly well aware, […]
Episode – 1136 : Antimatter
Episode – 1136 : Antimatter Podcast Transcript It is the most expensive substance in the world by a wide margin. When it was first proposed, it was actually proposed in […]
Episode – 1105 : The Silurian Hypothesis
Episode – 1105 : The Silurian Hypothesis Podcast Transcript The universe is billions of years old. If, in the future, humanity were to explore the galaxy and visit other planets […]
Episode – 1104 : Titanium
Episode – 1104 : Titanium Podcast Transcript Titanium is the ninth most abundant element in the Earth’s crust. However, titanium is not even remotely close to the ninth most common […]
Episode – 1072 : Iron
Episode – 1072 : Iron Podcast Transcript Located at the 26th place on the periodic table is the element iron. Iron is one of the most important elements in the […]
Episode – 1045 : The Most Dangerous Substances in the World
Episode – 1045 : The Most Dangerous Substances in the World Podcast Transcript There are a great many chemicals that are dangerous to work with. Things that you wouldn’t want […]
Episode – 1041 : Thorium
Episode – 1041 : Thorium Podcast Transcript Located in the 90th place on the periodic table is the element Thorium. Thorium, as with every element, has unique properties, making it […]
Episode – 1013 : Typhoid Mary
Episode – 1013 : Typhoid Mary Podcast Transcript In 1906, George Soper, a freelance sanitary engineer, was hired to investigate several outbreaks of typhoid fever in wealthy New York households. […]
Episode – 1009 : Fingerprints
Episode – 1009 : Fingerprints Podcast Transcript Located on the tips of our fingers are features known as friction ridges. We evolved them to get a better grip on objects. […]