But natural selection has stood the test of time as a basis for the science of biology.

VOA: special.2009.12.01

And I think this is what science is about. We continually test our ideas;

VOA: special.2009.12.01

These students are taking part in experiments designed to test their knowledge and inspire them to concentrate on science,technology, engineering and math.

VOA: standard.2010.05.10