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.

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.

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.