Search Results | efficient
Your search for "efficient" returned 2,622 results
How the Phonograph Revolutionized Sound Recording
science.howstuffworks.com/innovation/inventions/phonograph.htm
The phonograph transformed audio recording, leaving a lasting impact on how we capture and preserve sound. Learn about the invention's history and evolution.
Why the 1933 London Tube Map Is Still Considered Design Genius
science.howstuffworks.com/engineering/civil/london-tube-map.htm
Before 1933, getting around London on the massively confusing Tube system was a nightmare. That's when draftsman Harry Beck stepped in and revolutionized map design.
Are We Entering the Sixth Major Extinction on Earth?
science.howstuffworks.com/life/evolution/sixth-major-extinction.htm
A new global report says 1 million species are at risk of extinction - the greatest number in human history.
What's the Secret Behind the Numbers on the Interstate Signs?
auto.howstuffworks.com/numbers-on-interstate-signs.htm
Why is one road named I-5 while another is I-480? We take a closer look at the digits on those red, white and blue shield-shaped signs.
What is clean coal technology?
science.howstuffworks.com/environmental/green-science/clean-coal.htm
Clean coal reduces the harmful emissions caused by the burning of fossil fuels. Learn about the development of clean coal and the uses for clean coal technology.
8 Safest Airlines in the U.S. (Hint: No. 3 Crosses the Pacific Regularly)
science.howstuffworks.com/transport/flight/modern/safest-airlines-in-us.htm
If you're searching for the safest airlines in the U.S., you want hard data, not hype. Airline safety comes down to training, maintenance, operational reliability and how carriers respond to incidents.
Inside '300'
entertainment.howstuffworks.com/inside-300.htm
Centuries after an army of 300 Spartan warriors held off 100,000 Persian invaders, the story has been realized on screen as '300.' Go behind the scenes.
How CEOs Work
money.howstuffworks.com/ceo.htm
The CEO of a company makes a lot of money and has access to the private jet -- so how did he or she get this clout? Learn what a CEO's responsibilities are.
How Space Stations Work
science.howstuffworks.com/space-station.htm
Space stations allow astronauts to live and work in Earth orbit. Learn about space stations and how space stations work in this article.
How the Eden Project Works
science.howstuffworks.com/environmental/conservation/conservationists/eden.htm
The Eden Project is an incredible set of massive greenhouses in Cornwall, England. Check out this amazing place!