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Afternoon Snack

Lucy Cooke on the strange life of sloths, the world's slowest mammal; Emmanuel Acho discusses not setting goals; Antonio Machado-Allison on piranha-infested waters; David Biello explains how the compass unlocked the world.

Riddle Us This

How the Königsberg bridge problem changed mathematics, Dan Van der Vieren; Sherlock Holmes and the case of the Red-Headed League, Alex Rosenthal; can you outsmart the fallacy that fooled a generation of doctors, Elizabeth Cox.

Did You Know?

"Ancient Rome's Most Notorious Doctor" by Ramon Glazov; "Turbulence: One of the Great Unsolved Mysteries of Physics" by Tomás Chor; "What Can Schrödinger's Cat Teach Us About Quantum Mechanics?" by Josh Samani.

The Latest in Ideas

1) Could we replace data centers with … plant DNA?; 2) Capitalism broke the climate. Now it can fix it Akshat Rathi; 3) What long COVID taught me about life (and data) Giorgia Lupi; 4) The probe on a mission to touch the Sun Nour E. Rawafi.

Justice By (Re)design

What obligation do social media platforms have to the greater good, Eli Pariser; a new approach to defending the human rights of migrants, Itamar Mann; Africa's great carbon valley and how to end energy poverty, James Irungu Mwangi.

Secrets of the Wild

The Future of Cities

1) Lessons from people already adapting to the climate crisis Dorcas Naishorua 2) How buildings can improve life 'Äî inside and out Doris Sung 3) How pigeons took over the world Elizabeth Carlen and Joanna Moles 4) Meet mini-grids - the clean energy.

Lead the Way

Paul Hudson and Lindsay Levin discuss leadership in the age of AI; Sofia Ongele talks about how creative superpowers can help protect democracy.