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What a Contest of Consciousness Theories Really Proved

August 24, 2023

A five-year “adversarial collaboration” of consciousness theorists led to a stagy showdown in front of an audience. It crowned no winners — but it can still claim progress.

Q&A

Andreas Wagner Pursues the Secrets to Evolutionary Success

August 15, 2023

Why did mammals, grasses and some other groups of organisms explode in diversity only after millions of years? The evolutionary biologist Andreas Wagner plumbs the secrets of those “sleeping beauties.”

Even Synthetic Life Forms With a Tiny Genome Can Evolve

August 9, 2023

By watching “minimal” cells regain the fitness they lost, researchers are testing whether a genome can be too simple to evolve.

Selfish, Virus-Like DNA Can Carry Genes Between Species

August 3, 2023

Genetic elements called Mavericks that have some viral features could be responsible for the large-scale smuggling of DNA between species.

How Genetic Surprises Complicate the Old Doctrine of DNA

July 31, 2023

For over a century, biologists have had to contend with a complicated picture of genetics, which they’ve only recently begun to understand.

Why Insect Memories May Not Survive Metamorphosis

July 26, 2023

The reshuffling of neurons during fruit fly metamorphosis suggests that larval memories don’t persist in adults.

Underground Cells Make ‘Dark Oxygen’ Without Light

July 17, 2023

In some deep subterranean aquifers, cells have a chemical trick for making oxygen that could sustain whole underground ecosystems.

Can Math and Physics Save an Arrhythmic Heart?

July 12, 2023

Abnormal waves of electrical activity can cause a heart’s muscle cells to beat out of sync. In this episode, Flavio Fenton, an expert in cardiac dynamics, talks with Steve Strogatz about ways to treat heart arrhythmias without resorting to painful defibrillators.

In a Fierce Desert, Microbe ‘Crusts’ Show How Life Tamed the Land

July 12, 2023

Extreme microorganisms carpeting the Atacama Desert in Chile illuminate how life might have first taken hold on Earth’s surface.

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