Is extreme weather our most urgent challenge? Hundreds of thousands of people have been evacuated from Florida, where Hurricane Milton is due to make landfall today.
Forecaster’s tears over monster storm
Leave now: Floridians have been warned Milton could be the worst storm to hit the state in 100 years, with "unsurvivable" storm surges. Evacuation is a matter of life and death, urges President Joe Biden. Glossary
Millibars - Unit of measurement for atmospheric pressure.
Global warming - The Earth is getting hotter due to climate change.
Governor - In the USA, governors are elected leaders of the 50 states.
Ally - A person or group that cooperates with or supports another for a common purpose.
AI - A computer programme that has been designed to think.
Autocrats - A leader who is not bound by constitutional norms or checked by other sources of political authority, like a parliament or the judicial system.