Carbon Positive: Some of the biggest nations of East and South-East Asia, including China, could stabilise their greenhouse gas emissions within 15 years at a price of $80 billion a year, the World Bank says. China, Indonesia, Malaysia, Philippines, Thailand and Vietnam could make a concerted switch to renewable energy and greater energy efficiency at modest cost in order to stop carbon emissions growing by 2025, the bank says in a report. China is now the world’s biggest emitter and among those …