Global warming is happening, and one of the culprits is likely increased emission levels of carbon dioxide and other greenhouse gases as a result of our energy usage. Lynn Orr is director of the Global Climate and Energy Project and [See the full post…]

Alternatives can help create a sustainable energy future. The most promising long-term alternative energy sources are wind and solar: there is plenty of it, greenhouse gas emissions are low, and the required surface area is relatively small — especially when [See the full post…]