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In Test Tubes, RNA Molecules Evolve Into a Tiny Ecosystem

May 5, 2022

When researchers gave a genetic molecule the ability to replicate, it evolved over time into a complex network of “hosts” and “parasites” that both competed and cooperated to survive.

Where Do Space, Time and Gravity Come From?

May 4, 2022

Einstein’s description of curved space-time doesn’t easily mesh with a universe made up of quantum wavefunctions. Theoretical physicist Sean Carroll discusses the quest for quantum gravity with host Steven Strogatz.

Think of a Number. How Do Math Magicians Know What It Is?

May 4, 2022

Mathematical magic can seem like mind reading. Your job is to reveal the secret behind these four tricks.

Physicists Pin Down How Quantum Uncertainty Sharpens Measurements

May 3, 2022

Throwing out data seems to make measurements of distances and angles more precise. The reason why has been traced to Heisenberg’s uncertainty principle.

Mathematicians Coax Fluid Equations Into Nonphysical Solutions

May 2, 2022

The famed Navier-Stokes equations can lead to cases where more than one result is possible, but only in an extremely narrow set of situations.

Secrets of the Moon’s Permanent Shadows Are Coming to Light

April 28, 2022

Robots are about to venture into the sunless depths of lunar craters to investigate ancient water ice trapped there, while remote studies find hints about how water arrives on rocky worlds.

What Happens When We Give Animals Our Diseases?

April 27, 2022

While it’s understandable to focus on the diseases affecting humans, it’s important to study how our illnesses may affect animals.

Ancient Genes for Symbiosis Hint at Mitochondria’s Origins

April 26, 2022

Was the addition of mitochondria a first step in the formation of complex cells or one of the last? A new study of bacteria tries to answer this contentious question in evolutionary biology.

Elegant Six-Page Proof Reveals the Emergence of Random Structure

April 25, 2022

Two young mathematicians have astonished their colleagues with a full proof of the Kahn-Kalai conjecture — a sweeping statement about how structure emerges in random sets and graphs.

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