A powerful earthquake struck Tibet near Mount Everest on Tuesday, killing at least 126 people and injuring over 180. The quake, recorded at 6.8 by Chinese authorities and 7.1 by the US Geological Survey, occurred at 6:35 am in Tingri County, around 80 km north of the mountain. The tremors were felt across Nepal, Bhutan, and parts of India. The earthquake was triggered by a rupture in the Lhasa block - an area under significant tectonic stress. This area is a hotspot for seismic activity due to the ongoing collision of the Indian and Eurasian tectonic plates, a process that's been shaping the Himalayas for the past 60 million years. Tibet has seen several earthquakes in the past few decades, including a magnitude 8.6 quake in 1950.