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How does public transportation help the environment?

science.howstuffworks.com/transport/engines-equipment/public-transportation-help-environment.htm

In January 2004, the citizens of Milan, Italy, were preparing for a strike that would shut down all public transportation. Since an estimated 28 percent of greater Milan's 3 million populace relied heavily on public transit, the strike meant gridlock for most of the city.

Is Height a Factor in Our Health and Happiness?

health.howstuffworks.com/mental-health/human-nature/does-height-affect-health-happiness.htm

How does height affect happiness and health? Learn more in this HowStuffWorks article and Stuff to Blow Your Mind podcast.

Can you test your fertility at home?

health.howstuffworks.com/pregnancy-and-parenting/pregnancy/fertility/test-your-fertility-at-home.htm

Can you test your fertility at home? Visit Discovery Fit & Health to learn if you can test your fertility at home.

What breakthroughs in medicine came from NASA?

science.howstuffworks.com/innovation/nasa-inventions/nasa-breakthroughs-in-medicine.htm

What breakthroughs in medicine came from NASA? Visit HowStuffWorks to learn what breakthroughs in medicine came form nasa.

What is the world's fastest motorcycle?

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Learn which motorcycle tops the list as the world's fastest at HowStuffWorks.

What If Cows Didn't Exist?

science.howstuffworks.com/science-vs-myth/what-if/what-if-cows-didnt-exist.htm

A world without cows would be a world without burgers, right? Yes, and to beef eaters that's bad news, but it would also be a world with less methane. So would losing all cows be worth it?

20 Most Obese Countries in the World

health.howstuffworks.com/wellness/diet-fitness/weight-loss/most-obese-countries.htm

For at least the last half century, obesity has been one the rise around the world, contributing to what many officials consider a public health crisis. While there remains some controversy about how to accurately quantify the risks, the worldwide obesity rate continues to climb, and with it, a host of health problems.

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