Professor Prusinkiewicz is on sabbatical leave in Australia, but he sent us an e-mail suggesting a simple way to understand the process.

VOA: special.2009.10.13

Or send your e-mails to unsv@qq.com Join us again next week for more news about science in Special English on the Voice of America.

VOA: special.2010.01.12

Clarence Clemons played saxophone in Bruce Springsteen's E Street Band for forty years.

VOA: special.2011.06.24

Medical science recognized hepatitis E as a separate disease in nineteen eighty.

VOA: special.2010.11.16

The lawyers,the opposition, the civil society is going to be in the streets, although they [i.e.,authorities in Pakistan have started mass arrests.

VOA: standard.2009.03.11

We found the diner on E-bay. We live in the neighborhood and there's no place for breakfast.

VOA: standard.2010.05.06

Prime Minister Fischer and President Klaus have yet to decide who will be in charge of this and other events of the E.U.presidency.

VOA: standard.2009.05.11

The five American suspects were said to be in contact with an outlawed Pakistani militant group, Jaish-e-Mohammad , that has links with al-Qaida and Taliban extremists.

VOA: standard.2009.12.11

Abbas says the call was evidence the group Tehrik-e-Taliban Pakistan had planned the assault from South Waziristan with the intention of taking hostages in order to free captured militants.

VOA: standard.2009.10.12

He was Robert E.Lee. Lee was a Virginian and had served in the United States army for more than thirty years.

VOA: special.2009.08.20

The National Association for Sport and Physical Education says twenty to thirty students in a P.E.class should be the limit.

VOA: special.2009.08.06

"There are concerns in most O.E.C.D.countries that the number of nurses is too small to respond to the demand.

VOA: special.2010.06.07

A report from the e-Marketer research group predicts that worldwide,tablet sales will reach more than eighty-one million in two thousand twelve.

VOA: special.2010.12.20

In the e-mail, he used the words "trick" and "hide the decline" when writing about a graph showing rising temperatures.

VOA: special.2010.01.19