Why Exactly Is Flying Bad for the Environment?

Tweet Dear EarthTalk: Why is it that airplane exhaust is so much worse for the environment than engine emissions on the ground? — Winona Sharpe, New York, NY While air travel today accounts for just three percent of worldwide greenhouse gas emissions, the carbon dioxide…

Mexico City: A Young, Modern, Colorful Metropolis

Tweet Starre Vartan in Mexico City. This story was originally featured on MNN.com Over the years, I've heard my fair share about Mexico City, mostly negatives—crime, terrible air pollution and, well, crime topped the list. But upon a recent visit to the capital, I non…

Killington Ski Mountain’s Gondolas are Powered by What?

Tweet I had been looking forward to a family ski trip over this past New Year’s for quite a while. I was ready to hit the slopes again. The last time I had skied was several years back when I made a frantic descendance down…