Brian Gallagher

One question for Matthew Birkhold, author of “Chasing Icebergs: How Frozen Freshwater Can Save the Planet.”

One question for Brad Ringeisen, a chemist and executive director of the Innovative Genomics Institute.

One question for Miguel Aragon, a computational physicist at the National Autonomous University of Mexico.

One question for Jon Rueda, a doctoral student in moral philosophy at the University of Granada.

One question for Thomas Nicholas, a computational plasma physicist and former fusion researcher who now studies climate science at Columbia University.

One question for Paul Sutter, a theoretical cosmologist at Stony Brook University.

One question for Joseph Silk, an astrophysicist at Johns Hopkins University.

One question for J.D. Haltigan, an assistant professor of child and youth mental health at the University of Toronto.

One question for Nita Farahany, a philosopher at Duke University.

One question for Anna Machin, an evolutionary anthropologist at Oxford University.

One question for Iris Berent, an Israeli-American cognitive psychologist at Northeastern University.

When the going gets tough, the tough get philosophical.