Growing lead crystals
37:51
Fabriquer des cristaux métalliques à partir de Pepto-Bismol
16:31
Making lead crystals that taste sweet
26:16
Can you GROW an Opal?
16:56
How To Make Ruby in a Microwave
21:08
Recreating the world's first test for diabetes
18:32
The lead sponge mystery continues...
34:51
Comment faire pousser des cristaux à la maison RAPIDEMENT !!!
14:18