"We also carefully consider the sources of exposure of populations to radiofrequency electromagnetic fields, the nature of these fields as they come from various devices, including wireless phones, and we look carefully at the physical phenomenon by which exposure to such fields may perturb biological systems and lead to cancers."

VOA: special.2011.06.06

Warmer temperatures cause water to expand,a phenomenon called thermal expansion, and cause glaciers and polar ice caps to melt.

VOA: standard.2009.11.09

But it wasn't always so. The rise of the soybean in America is a 20th-century phenomenon.

VOA: standard.2010.02.01

Those pandemics disproportionately killed younger people,a phenomenon, which is different from seasonal flu.

VOA: standard.2009.05.14

"The July Fourth concert is an amazing thing. It's more of a sociological phenomenon than it is a musical event, but we are at the center of it.

VOA: standard.2010.07.28

"I don't think there's any way to prepare yourself for this phenomenon.

VOA: standard.2009.11.23

He soon turned the local phenomenon into a national icon.

VOA: standard.2010.07.28

Chan says climate change is a global phenomenon.

VOA: standard.2010.01.02

She also decried dowry-related murder and so-called "honor killings" of young women, and selective abortion and infanticide of females in many countries that has created the phenomenon of millions of "missing women."

VOA: standard.2009.09.25

The Iranian diplomat told delegates that illicit drugs represent a serious peril to the security and stability of not only Afghanistan, but the entire region,adding that no country can fight the phenomenon alone.

VOA: standard.2009.03.27

"So instead of maybe doing a lecture on a scientific principle, we may learn a science song about it, or a rap or perform a dance that sort of uses our body to explain a scientific phenomenon.

VOA: standard.2009.11.25