Незнам дали вече има такава тема, но гледам разни неща в Тубата, та може да е полезно и интересно.
Geologist (Episode 52)
http://www.youtube.com/watch?v=bkI3uTxvO4g
Living Rock - An Introduction to Earth's Geology
http://www.youtube.com/watch?v=UBC1Ppdd4_Y
Geology Kitchen #1 - What is a Mineral?
http://www.youtube.com/watch?v=rTXSwnkieZc&feature=player_detailpage&list=PL0D8515B0F0DFD945
Geology Kitchen #2 - Identifying Minerals
http://www.youtube.com/watch?v=cjA2-MrWAVU
Geology Kitchen #3 - Clastic Sedimentary Rocks
http://www.youtube.com/watch?v=eOuPsJwYu9I