| Join AACT
| Renew Membership
You have to be an AACT member to access this content, but good news: anyone can join!
Have a student video passcode? Enter it below to access our videos.
VIDEO in History, Periodic Table, Alpha/Beta/Gamma Decay, Radioactive Isotopes, Sam Kean's Disappearing Spoon.
Last updated August 23, 2017.
In this video, Sam Kean tells stories about helium.