Turkey's energy bill due to imports will fall with the increase in use of renewable energy sources. We have no control over the prices of petroleum and natural gas.

There is an urgent need to stop subsidizing the fossil fuel industry, dramatically reduce wasted energy, and significantly shift our power supplies from oil, coal, and natural gas to wind, solar, geothermal, and other renewable energy sources.

When you look at the number of nuclear power plants in China and India, we can't afford not to pursue similar alternative energy sources. If we do not, it would do immense harm to the manufacturing industry in the Midwest.

Since stepping down as laboratory director in 1999, I have devoted an increasing fraction of my time to international issues. I am involved with energy, environment, and sustainability issues, particularly as they involve new energy sources free of greenhouse gases.

We have to be aware that fossil fuel energy sources have an expiry date. A timeframe of 30, 40 or 50 years can seem a long time to get rewards for economic policy, but it's only a short time for implementing a new energy policy.

What my voting record reflects is constantly looking to improve the amount of resources we having going into research, development, and prototypes we have going into renewable energy sources.

Neglecting clean energy sources such as solar, wind, and especially nuclear, can result in blackouts, increased power bills, and will take a heavy toll on our efforts to reduce greenhouse gases.

As a former governor, I am familiar with the challenge of balancing the immediate electricity and heating needs of our citizens with the long-term priority of ensuring that power comes from a diverse mix of energy sources that allows us flexibility as we fight the effects of climate change.

Some solutions are relatively simple and would provide economic benefits: implementing measures to conserve energy, putting a price on carbon through taxes and cap-and-trade and shifting from fossil fuels to clean and renewable energy sources.

Many countries - as well as cities, states and provinces - are taking global warming seriously and are working to reduce emissions and shift to cleaner energy sources.