Alexis looks on the bright side of life after peak travel. Alissa Walker strikes a similar chord on the environmental implications of less travel:

By 2050, it's estimated that air travel will be the largest contributor to global climate change. Because the emissions are deposited higher in the atmosphere, they exacerbate the warming effect over other pollutants, according to a study by the United Nations. We now fly more than we ever have as a societythis holiday season actually saw a 3 percent increase in travelers over last year (43.6 million people flew over the Christmas and New Year's holidays)...

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