VOA Special English - Science in the news

Lesson 24: Imagine, There Was a Time When People Had No Need to Measure Time

Exploring one of the universe's great mysteries.

 
Audio files and text copyright belongs to www.voanews.com . Codes copyright belongs to www.epangsoft.com.
This program is distributed under the permissons of epangsoft.com. More information, please contact epangsoft.com