Although she has spent her life trying to protect chimps in their natural environment, these animals are still very much in danger.

VOA: special.2009.11.18

He developed the theory of evolution that life on Earth developed through the process of natural selection.

VOA: special.2009.12.16

But it was Darwin who identified and explained the process, natural selection, that causes life to evolve.

VOA: special.2009.02.25

They show natural beauty, city life and Americans at work and play.

VOA: special.2009.03.23

"In England,like in the United States, bilingualism is seen as something special and unique and something to be commented on and perhaps work towards, whereas in many other parts of the world being bilingual is just seen as a natural part of life."

VOA: special.2011.03.09

The act said the purpose was to "conserve the scenery and the natural and historic objects and the wild life therein and to provide for the enjoyment of the same in such manner and by such means as will leave them unimpaired for the enjoyment of future generations."

VOA: special.2009.09.28

On stage,Milner tells the story through music. Darwin's theory of evolution through natural selection inspires some tunes,and episodes in his life inspire others.

VOA: standard.2009.11.25