You Can’t See It, But There’s A LOT Of Stuff In Your Drinking Water

Episode 2 of 4 Check us out on Soundcloud! https://soundcloud.com/dnewsplus Please Subscribe! http://bit.ly/28iQhYC Discovery GO - http://smart.link/57ae195b47796 Science GO - http://smart.link/57ae1a34dd168 Check out The Great Courses: Sign up today and get a Free Month of unlimited access to all of The Great Courses Plus lectures - Go to: thegreatcoursesplus.com/dnewsplus There are various things in natural water that can be harmful for us to drink, from debris and bacteria. How and when did water become safe? + + + + + + + + Previous Episode: How Did Early Civilizations Supply All Their Drinking Water?: https://www.youtube.com/watch?v=X1-FMc8tIgs + + + + + + + + Water purification: https://www.sciencedaily.com/terms/water_purification.htm "Water purification is the removal of contaminants from raw water to produce drinking water that is pure enough for human consumption or for industrial use." Parasites - Cryptosporidium (also known as "Crypto"): https://www.cdc.gov/parasites/crypto/ "Cryptosporidium is a microscopic parasite that causes the diarrheal disease cryptosporidiosis. Both the parasite and the disease are commonly known as "Crypto." There are many species of Cryptosporidium that infect animals, some of which also infect humans." Overview of Giardiasis: http://www.merckvetmanual.com/mvm/digestive_system/giardiasis/overview_of_giardiasis.html "Giardiasis is a chronic, intestinal protozoal infection seen worldwide in most domestic and wild mammals, many birds, and people. Infection is common in dogs, cats, ruminants, and pigs." Types of Water: https://www.drinkmorewater.com/types-of-water "Tap Water - Everyone knows what this is. In the Baltimore-Washington Region, almost all tap water comes from surface sources like the Potomac or Patuxent Rivers." How does iodine purify water?: https://www.reference.com/science/iodine-purify-water-a535b84a664e2372 "Iodine purifies water by oxidizing the membranes and organelles of water-born pathogens, upsetting their biological functions and causing them to die. Iodine treatment is a fast and cost-effective way to neutralize pathogens in freshwater for drinking." How does chlorine added to drinking water kill bacteria and other harmful organisms? Why doesn't it harm us?: https://www.scientificamerican.com/article/how-does-chlorine-added-t/ "While quenching your thirst with a glass of tap water, enjoying your morning shower or swimming in a pool, you most likely are, at one time or another, aware of the chlorine used to disinfect your municipal water." The Mineral Content of US Drinking and Municipal Water: https://www.ars.usda.gov/ARSUserFiles/80400525/Articles/NDBC32_WaterMin.pdf "The mineral composition of tap water may contribute significant amounts of some minerals to dietary intake. The USDA's Nutrient Data Laboratory (NDL) conducted a study of the mineral content of residential tap water, to generate new current data for the USDA National Nutrient Database." Antibacterial Soap: http://www.ecowatch.com/environmental-and-health-impacts-of-antibacterial-soap-1881802674.html "Antibacterial soaps are about the worst choice when it comes to cleaning your hands or your house. They are no more effective than plain old soap and water, but pollute the environment and may be contributing to antibacterial resistance." What is the difference between salt water and fresh water?: https://www.reference.com/science/difference-between-salt-water-fresh-water-1d2f2418ecef324 "The main difference between salt water and fresh water is the salinity content. Both contain salt or sodium chloride, but fresh water contains only small amounts of salt. The earth's oceans and seas are saltwater ecosystems, while lakes, rivers, streams, marshes and ponds are freshwater ecosystems." Potential Effects of Drinking Saltwater: http://science.howstuffworks.com/science-vs-myth/what-if/what-if-you-drink-saltwater1.htm "Have you ever been minding your own business on an elevator when an aggressively perfumed person stepped on? What happened? Did the Lady Stetson/Drakkar Noir stay on the person? Nope, it wafted all over the elevator so that everyone could smell it." Does snow dehydrate you?: https://www.howitworksdaily.com/does-snow-dehydrate-you/ "Not directly, but eating snow in a survival situation isn't the best strategy. As it's so cold, it will decrease your core temperature, forcing your body to increase its metabolic rate to keep you warm. In these cases, you trade high levels of energy for relatively little gain." + + + + + + + + DNews Plus is built for enthusiastic science fans seeking out comprehensive conversations on the geeky topics they love. Host Trace Dominguez digs beyond the usual scope to deliver details, developments and opinions on advanced topics like AI, string theory and Mars exploration. DNews Plus is also offered as an audio podcast on Soundcloud.