Researchers find that caffeine evolved in coffee, tea, and chocolate independently.
The box jellyfish shows us that evolution is able to produce eyes in more than one way.
Though you may think you love caffeine, you're no match for this custom-built E. coli strain.
55 million years ago, as the Earth heated up, many mammal species got smaller. Could the same thing happen again with human-induced global climate change?
Suppose your ancestors had lived in darkness for almost a million years. This is the world of the Mexican blind cavefish.
Our presence could be causing the brains of non-human animals to grow.
Despite your best chemical defenses, cockroaches are evolving to bug you even more.
Scientists believe human brain development is the result of genetic mutations that occurred millions of years ago.
Unlike their contemporaries the dinosaurs, crocodiles managed to survive whatever killed off their Jurassic cousins. So what accounts for their longevity?
New fossils unearthed in China cast light on the evolution of today's fliers.