
Leap seconds have helped keep clocks synchronized with Earth’s rotation, but their time is now over – here’s why
Vahe Peroomian, USC Dornsife College of Letters, Arts and Sciences
Real kids ask real questions and real experts answer them
Amiran Baduashvili, University of Colorado Anschutz

Karl Deisseroth, Stanford University

Ornob Alam, New York University

Daniella McCahey, Texas Tech University and Jean de Pomereu, University of Cambridge

Emma Elliott Smith, Smithsonian Institution; University of New Mexico and Torben Rick, Smithsonian Institution

Vahe Peroomian, USC Dornsife College of Letters, Arts and Sciences
