Small global warming rise would have 'alarming' impact - World Bank

World Bank President Jim Yong Kim speaks at a Thomson Reuters Newsmaker event, at Canary Wharf in east London June 19, 2013. REUTERS/Stefan Wermuth

WASHINGTON (Reuters) - Much of Bangkok could flood within the next two decades if global warming stays on its current trajectory, as sea levels rise and cyclones intensify, the World Bank said in a new report on Wednesday.

The flooding of 40 percent of the Thai capital was just one of dozens of negative effects the Washington-based World Bank warned would happen if the world grew warmer by just 2 degrees Celsius (3.6 Fahrenheit), which it said is likely to occur in the next 20 to 30 years under a "business-as-usual" scenario.