Brian Gallagher

One question for David Krakauer, an evolutionary theorist and president of the Santa Fe Institute for complexity science.

One question for Christopher Timmermann, a cognitive neuroscientist at Imperial College London.

One question for Matt Killingsworth, a psychologist at the University of Pennsylvania.

One question for Jillian Scudder, astrophysicist and author of “The Milky Way Smells of Rum & Raspberries.”

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.