Jane Goodall has said that it is often easy to feel upset about the destruction of the natural world.

VOA: special.2009.11.18

It may look like a natural environment of lakes and woodlands, but it was entirely built by human labor.

VOA: special.2009.10.30

The Forest Service is protecting the area from too much human activity so it will return to its natural wild condition.

VOA: special.2009.07.20

It is housed at the Carnegie Museum, which has both an art museum and a museum of natural history.

VOA: special.2009.07.13

And it can limit the need for chemical fertilizers by letting animal waste do the job of natural fertilizer.

VOA: special.2010.01.19

At first it might seem very unusual to see a natural form like a hill inside a museum.

VOA: special.2009.05.06

In many countries there are a few natural bottlenecks, whether it be large data centers or right-of-ways."

VOA: special.2011.02.21

Jerry Glover says it is time to put natural plant communities back in control of our land.

VOA: special.2010.09.22

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

VOA: special.2009.02.25

The group says it could be hard to stop experimental organisms from entering the natural environment.

VOA: special.2010.07.20

It seemed to Jefferson that the Count had gone out of his way to speak of natural wonders in America as if they were unimportant.

VOA: special.2010.08.08

He says it makes us remember our place in the natural world.

VOA: special.2009.10.07

It handles emergencies caused by war, infectious disease and natural disasters.

VOA: special.2010.07.26

Farmers started using it as a natural way to kill insects.

VOA: special.2010.05.25