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By PopSci on at

Will People Ever Evolve Out of Craving Unhealthy Food?

Maybe, but it's going to take a long time. For the past 200,000 years or so, fatty and sugary foods were hard for humans to come by and well worth gorging on. Fats help maintain body temperature, sugars provide energy, and craving such food is hardwired: Eating fats and sugars activates reward centers in the brain.

This Is What Life on Mars Would Look Like

By Jamie Condliffe on at

The idea of life on Mars never gets old, but while we know it would never involve little green men, we've never really known what we might find. When a Mars training mission recently unearthed a thriving world of microbes below the Atacama desert in Chile, however, we got a much better idea.

Do Competitive Eaters Have Unusual Stomachs?

By PopSci on at

Yes. Marc Levine, the chief of gastrointestinal radiology at the Hospital of the University of Pennsylvania, USA, has found that a competitive eater's stomach works more like an expanding balloon than a squeezing sac.

What Is a Hangover?

Yippee! Let's poison ourselves with beverages that will make us violently ill! It was your battle cry last night, and today you're paying the price. But what is that hangover you're experiencing, exactly?