Eight field seasons mapping around the Everest – Makalu massifs in Nepal and south Tibet has resulted in a detailed geological map (scale: 1:100,000). Combining macro- and micro-scale structural mapping with thermobarometry and U-Pb geochronology has unravelled a comprehensive 4-dimensional history of the tectonic evolution of the Himalaya. The 25th April 2015 Gorkha earthquake resulted in 150 km long rupture across Nepal, up to 5 meters of horizontal slip, 1.5 meters of uplift of the peaks north of Kathmandu, large-scale tilting of the Nepal Himalaya, and huge destruction across the mountain regions of Nepal. This talk will briefly summarise the causes and consequences of the earthquake and our charity work rebuilding a village above the epicentre, and constructing a new school and hospital. Recent road, rail, and dam construction in Nepal and especially in south Tibet have the potential to cause huge environmental damage, and this talk will cover some of these ecological problems.