Related topics: genes · cells · species · birds · plants

Giant lizards learnt to fly over millions of years

Pterodactyls and other related winged reptiles that lived alongside the dinosaurs steadily improved their ability to fly to become the deadly masters of the sky over the course of millions of years.

Female toads seek a good man—even if he's another species

The one thing about species that most people probably remember from high school science class is that when it comes to sex, they generally stick to their own kind. Hybrids happen, but they are usually thought to be accidental, ...

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