What is methanol poisioning that killed four tourists in Laos

Four people, including an Australian teenager and an American tourist, have died from suspected methanol poisoning in Vang Vieng, Laos. Several tourists fell ill after consuming tainted alcohol. A 19-year-old Australian woman died in a Thai hospital, while her friend remains hospitalized. Authorities suspect methanol-laced drinks are responsible and advise caution when consuming alcohol in Laos.