Lithium makes up only 0.002% of the Earth's crust, but has become a major component of technology and industry. Find out about the chemical properties of lithium, how those properties allow lithium to be versatile, and which countries are home to the world's largest supply of lithium.
This clip provides a brief history of Helium and its discovery by humans. It mentions the some of the properties of the element and describes its different applications in many industries. It also explains that Helium is a nonrenewable resource.
The MythBusters have already debunked the myth that a few grams of caesium (Cs) or rubidium (Rb) will cause a hand grenade-sized explosion in a toilet. To further test the myth, they increase the amount to 2.5 kilograms and run the test in a bathtub with sodium (Na) and potassium (K).
Professor Anderson leads the group through the underground cave. He almost falls down a deep chasm as he tries to assure the group that he's good with directions. He attempts to use a flare to measure the depth of the chasm, but the magnesium rocks cause it to explode. Hannah then gives him a glowstick, and he uses that to determine that the chasm is about 200 feet deep.