What to know

• It was a catastrophic scene as people raced to escape the deadly torrent of water and earth that tore through a valley in Nepal along the Tibet border on Wednesday. Surveillance video captured the exact moment an unstoppable, 20-foot wall of water destroyed ev...S1
• By Gopal Sharma, Sahana Bajracharya and Navesh Chitrakar TRISHULI, Nepal, Aug 27 (Reuters) - Rescuers searched for survivors in the debris-strewn valleys and hillsides of Nepal on Thursday as moreS2