In answer to Moe, yes, I work in Tibet. Unfortunately, my work is mostly on remote-sensed data, so I haven't been able to join my group members on their many trips. I was, however, able to go in the Fall of 2003 for a month. If you wanna see an album of my favorite photos from that trip, go here.
The countryside is full of stunning colors and the Tibetans I met are strong and gentle. They have virtually nothing, but are always happy to invite you inside and share a cup of yak butter tea and 'conversation' that mostly consists of shy smiles.
Which reminds me of the power of a genuine smile....