The more people travel, the worse our environment becomes.

The tourism industry might introduce the idea of a carbon passport.

It means that each traveler is assigned a yearly carbon allowance they cannot exceed.

Some European countries are increasing taxes or outright banning some short-domestic air travel.

Some people would like to travel to cooler places because of climate change.

Tour companies should limit the number of tourists to avoid crowds and pollution.  

From Native Camp Daily News からのsummary
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