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Firefighters drag their water hose after putting out a spot fire near Moruya, Australia, Saturday, Jan. 4, 2020. Australia’s Prime Minister Scott Morrison called up about 3,000 reservists as the threat of wildfires escalated Saturday in at least three states with two more deaths, and strong winds and high temperatures were forecast to bring flames to populated areas including the suburbs of Sydney. (AP Photo / Rick Rycroft)

Australia’s unprecedented wildfires are supercharged thanks to climate change, the type of trees catching fire and weather, experts say. Here are a few questions and answers about the science behind them.

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Cars sit submerged in water from Hurricane Dorian in Freeport, Bahamas on Tuesday, Sept. 3, 2019. (AP Photo / Ramon Espinosa)

Hurricane Dorian pounded away at the Bahamas for a day and a half, devastating thousands of homes, trapping people and crippling hospitals. Atmospheric scientist Scott Collis of Argonne National Laboratory weighs in.

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Lake Michigan water levels are expected to top the record for June, and there’s a chance they could surpass the all-time record set in 1986. We head to the lakefront, and speak with experts.

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Chicago scientists Scott Collis (courtesy Scott Collis), left, and Yarrow Axford (photo by Alex P. Taylor).

Subzero temperatures in Chicago are not unlike Arctic parts of the globe. Local scientists Scott Collis and Yarrow Axford share their experiences working on the edges of the world.

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