During the early Cretaceous period, dinosaurs made a huge evolutionary leap as they developed feathers and the ability to fly.

How likely is it that life elsewhere will go through the same evolutionary leaps as life on Earth?

It was hoped thus to find some hint of the direction in which the new evolutionary leap should take place.

So what are we to make of 1999, when some of us seemed determined to take an evolutionary leap backward?

Some people are capable of evolutionary leaps, but not the blacks.

They evolved from seagoing animals into flying ones in one evolutionary leap.

This suggests that the evolutionary leap to multicellularity may be a surprisingly small hurdle.

Maybe that's not a grand and glorious evolutionary leap after all.

Your father wanted to make the next evolutionary leap.

But occasionally technology takes an evolutionary leap, as with the computer.