The planet’s surface was warmer in 2016 than in any year since record-keeping began in 1880. But figuring out Earth’s precise temperature today is tougher than measuring how it changes. Ask NASA ...

Traveling in cold weather conditions can be life threatening. The information provided here is designed for educational use only and is not a substitute for specific training or experience. Princeton ...

Introduction Ambient formaldehyde (HCHO) is globally distributed, posing significant exposure to vast populations, particularly vulnerable demographics such as children. Investigations into the ...

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