The majority of people interviewed in a think-tank survey want the government to spend more either on increasing energy efficiency or developing alternative energy sources in order to tackle climate change. Of the 1,008 people who took part in a telephone survey commissioned by the think tank Civic Exchange, 80 per cent supported the 'pay now' options, compared with 7 per cent who chose 'pay later' to deal with consequences of climate change. The remainder said they had no idea. Of the supporting majority, more than 90 per cent agreed the government should require developers to build energy-efficient buildings; require taxis, buses and cars to become electric over the next 20 years; and bring all government buildings up to the highest standards of energy efficiency by a set date. 'It's surprising that people want to pay more on climate change, as paying is a very sensitive issue in Hong Kong. People have had a lot of discussions on pay issues, such as the plastic bag levy,' said Professor Michael DeGolyer of Baptist University's department of government and international studies, who conducted the study. He also said the 'pay later' option received most support from people in their 50s and 60s, those born on the mainland and retired people. On the effects of climate change, half the respondents said they were most concerned with rising temperatures, followed by 30 per cent who were worried about extreme weather conditions. The survey also found that the issue of global warming had moved up to second place among environmental issues considered of great concern. In 2001 global warming was in 11th place. Drinking-water pollution took top spot, while air pollution was the third-biggest concern. Forty-six per cent favoured using environmental experts to guide the government on climate-change issues, while about 28 per cent thought green groups should take on the role. Business executives and politicians were not trusted at all. Christine Loh Kung-wai, chief executive of Civic Exchange, said the survey results showed there was clear support from the community for the government to act on climate change. The administration is conducting a three-month public consultation exercise on Hong Kong's climate change strategy.