Everything Matters | Nickel | Ron Hipschman and Chuck Mignacco | Exploratorium
35:27
Everything Matters | Zinc | Ron Hipschman | Exploratorium
31:05
Everything Matters | Cobalt | Ron Hipschman
57:36
Construction of the 10000 year clock - Alexander Rose (SETI Talks)
39:59
Everything Matters | Gallium | Ron Hipschman | Exploratorium
47:34
Everything Matters | Argon | Ron Hipschman and Chuck Mignacco | Exploratorium
17:58
Understanding Metals
38:14
Everything Matters | Sodium | Ron Hipschman | Exploratorium
39:29