Methane is short-lived but its planet-heating effects are much stronger than CO2. A new report says action on cutting the gas is too slow. Where does it come from, and what can we do to stop it ...

The Trump administration stopped updating a database tracking the costs of the country’s worst disasters. A group of scientists has revived it. By Scott Dance The state leads the country in “repair ...

We are not ready for AI more intelligent than ourselves. Here’s why.

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