Quick: How many kinds of gasoline do we use in America? Most people would say three or six: regular unleaded, mid-grade, and premium, along with the ethanol blends of the same that have become nearly universal. The actual number is somewhere above 45, though hard to pin down exactly, according...

Washington will have to prepare for a Japan that necessarily will be more focused on domestic affairs for a long time.

Today, cholera can easily be controlled by maintaining simple sanitary standards--but there is no running water in much of Zimbabwe, and sanitation systems have collapsed.

Ethanol is a losing proposition, but fuels from algae may be the path to cutting our dependence on imported oil.

High gas prices are inducing consumers to tighten their belts and politicians to call for taxes on oil companies. This Outlook explores the true causes of oil price fluctuation and explains how policymakers can help lower gasoline prices.

Grass-roots leaders are convinced that lasting Russian liberalization will come not from violent revolution or a great rupture imposed from above but from a mature civil society with the courage to control the executive. Thus, their work is not geared toward political change, but inner moral transformation, self-organization, and self-reliance.

Politicians have frequently directed harsh rhetoric toward particular corporate taxpayers that earn high profits. At times, this rhetoric has been accompanied by policy proposals that single out a narrow set of profitable taxpayers for disparate treatment. Perhaps the most notable example is the war against Big Oil.

Kenneth P. Green discusses the limits of renewable and alternative fuels for providing energy security, or energy independence.