This is Science in the News, in VOA Special English. I'm Jun Simms. Today Shirley Griffith and Bob Doughty tell about two recent inventions that have helped to save lives.
We will also tell about the people who developed them.
This is Science in the News, in VOA Special English. I'm Jun Simms. Today Shirley Griffith and Bob Doughty tell about two recent inventions that have helped to save lives.
We will also tell about the people who developed them.