last-chance tourism carbon footprints environmental change

Tourists are rushing to see places before they disappear

Melting glaciers and threatened natural wonders attract visitors hoping to see them before they change forever. But getting there—especially by plane—adds greenhouse gas emissions that contribute to the same warming. The rush to witness a disappearing place can become part of the problem.

China’s tribute system shaped East Asian ties

From the 3rd through the 18th centuries, rulers across much of East Asia sent tribute to China’s emperor. The emperor offered benefits such as recognition or agreements not to attack, and gave those rulers legitimacy. The system shaped much of the region’s diplomacy and trade.

Einstein used Brownian motion to support molecules

Brownian motion is the movement seen in tiny particles suspended in a liquid. Einstein showed that this visible movement could serve as firm evidence for molecules, which are too small to see directly.

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last-chance tourism carbon footprints environmental change

Tourists are rushing to see places before they disappear

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