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What's the Most Americans Have Ever Paid for Gas?
auto.howstuffworks.com/fuel-efficiency/fuel-consumption/highest-gas-payment.htm
Gas prices seem like they are currently out of control, but adjusted for inflation, there was another time when they were even higher. When was that, and what causes gas prices to fluctuate?
Inflation Is Spiking Worldwide, Not Just In the U.S.
money.howstuffworks.com/worldwide-inflation-news.htm
Inflation in the U.S. was over 9 percent in June but many countries in Europe have even higher rates. What's causing the global spike?
Is diesel fuel better for the environment?
auto.howstuffworks.com/fuel-efficiency/fuel-consumption/diesel-fuel-better-environment.htm
Many countries are using more diesel fuel for a variety of reasons. Learn whether diesel fuel is good for the environment from this article.
How Diesel Engines Work
auto.howstuffworks.com/diesel.htm
Diesel engines are often more efficient and less expensive to operate than their gasoline alternatives. So why aren't there more diesels on the roads? Well, they have their own issues, too.
Why is offshore drilling so controversial?
science.howstuffworks.com/environmental/energy/offshore-drilling-controversy.htm
The offshore drilling controversy is often simplified to the economy vs. the environment. Learn about the offshore drilling controversy.
Is coal to liquid more efficient than gasoline?
science.howstuffworks.com/environmental/energy/coal-liquid-efficient-gasoline.htm
Is coal to liquid more efficient than gasoline? Keep reading to learn if coal to liquid is more efficient than gasoline.
What Is the Strongest Currency in the World?
money.howstuffworks.com/strongest-currency-in-the-world.htm
If you found a bag full of cash, which currency would you prefer it to be? The quick answer might not be the best one; while a suitcase full of U.S. dollars would mean you could start spending immediately (provided you were in the U.S., or in a country that accepted the U.S. dollar as an official currency), there are actually more valuable currencies out there.
Could Giant Sea Kelp Be the Next Biofuel Source?
science.howstuffworks.com/environmental/energy/sea-kelp-biofuel.htm
Move over corn and soybeans, there's a better biofuel in town. And this one grows in abundance at the bottom of the ocean.
Can hydrogen be the fuel of the future?
science.howstuffworks.com/environmental/energy/hydrogen-fuel-future.htm
When it comes to looking to the energy source that will replace fossil fuels, there are no shortage of options.
Shunning the Suez: Tankers Take the Long Route to Save Cash
history.howstuffworks.com/historical-events/shunning-the-suez-tankers-take-the-long-route-cash.htm
Some cargo ships sail around the coast of Africa to avoid paying the Suez Canal tariff. HowStuffWorks Now explains why it may make financial sense.