the San Andreas Fault, the Great Rift Valley, and the Himalayas related videos

http://www.youtube.com/watch?v=ZxPTLmg0ZCw
http://www.youtube.com/watch?v=NsqxGHb8w6k
 http://www.youtube.com/watch?v=L8CT3UHp0IE

mid ocean ridges, sea floor spreading, plate tectonics

The following videos might help you understand mid ocean ridges and sea floor spreading:
http://www.youtube.com/watch?v=FQsbT9j3P44
http://www.youtube.com/watch?v=GyMLlLxbfa4&feature=related
http://www.youtube.com/watch?v=ifke1GsjNN0&feature=related

plate tectonics:
http://www.youtube.com/watch?v=nfziy_860GU&feature=related

a short video will lead you to the Chinese new year

http://www.history.com/videos/history-of-the-holidays-chinese-new-year#history-of-the-holidays-chinese-new-year

5 layers of the earth and related videos

The website might lead you to the layers of the earth and related videos:
http://www.youtube.com/watch?v=aoV4dmXIt_8&feature=related

Videos about the baby growth and precaution

http://www.youtube.com/watch?v=HU5F30JS8U4&feature=related
http://www.youtube.com/watch?v=_hNL__IJxGw&feature=related

Type I and Type II diabetes Mellitus

The following videos have a good introduction to Type I and Type II diabetes:
http://www.youtube.com/watch?v=QWJJ3M3xss4
http://www.youtube.com/watch?v=DpdlJ79ACCo&feature=related