David James Edward Callaway is a biological nanophysicist in the New York University School of Medicine, where he is professor and laboratory director. He was trained as a theoretical physicist by Richard Feynman, Kip Thorne, and Cosmas Zachos, and was previously an associate professor at the Rockefeller University after positions at CERN and Los Alamos National Laboratory. Callaway's laboratory discovered potential therapeutics for Alzheimer's disease based upon apomorphine after an earlier paper of his developed models of Alzheimer amyloid formation. He has also initiated the study of protein domain dynamics by neutron spin echo spectroscopy, providing a way to observe protein nanomachines in motion.

Tengboche is a village in Khumbu Pasanglhamu rural municipality in the Khumbu subregion of Province No. 1 in Nepal, located at 3,867 metres (12,687 ft). Within the village is an important Buddhist monastery, Tengboche Monastery, which is the largest gompa in the Khumbu region. The structure was built in 1923. In 1934, it was destroyed by an earthquake but subsequently rebuilt. It was destroyed again by a fire in 1989, and again rebuilt with the help of volunteers and the provision of foreign aid. Tengboche has a panoramic view of the Himalayan mountains, including the well-known peaks of Tawache, Everest, Nuptse, Lhotse, Ama Dablam, and Thamserku. Tenzing Norgay, the first man to reach the summit of Mount Everest with Sir Edmund Hillary, was born in the area in the village of Thani and was once sent to Tengboche Monastery to be a monk.