VOA Special English - Science in the news

Lesson 19: Remembering a Chimp Known for Her Use of American Sign Language

Also: Experts suggest early autism testing for all babies. And scientists are developing plants to eat chemical waste.


 
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