evolved

Since then it has evolved into a global crisis.

Salsa is a kind of dancing that evolved in the mid-1970s in New York.

LOL has evolved into something much subtler and sophisticated and is used even when nothing is remotely amusing.

As a zoologist focusing on the studies of apes and monkeys, I've been studying why humans evolved to become the naked ape and why skin comes in so many different shades around the world.

Flamingos have evolved very leathery skin on their legs so they can tolerate the salt water, says David Harper, a professor at the University of Leicester.

We can make a very good estimate from the fossil record that humans probably evolved naked skin around a million and a half years ago and meanwhile they mostly lost their coat of fur.

Support is growing for a theory that sleep evolved so that connections between neurons in the brain can be weakened overnight, making room for fresh memories to form the next day.

This method provided a readout for how home energy use has evolved since the early 1990s.

It was only after "toddler" became a common shoppers' term that it evolved into a broadly accepted developmental stage.

Jealousy and anger, for example, may have evolved to alert us to important inequalities.

Thus, in his view, diverse aspects of culture, such as the structure of families, forms of marriage, categories of kinship, ownership of property, forms of government, technology, and systems of food production, all changed as societies evolved.