成人快手

Supporting Content

• The eclipses, spacecraft and astronauts changing our view of the Universe

  

• The Curious Cases of Rutherford and Fry

  A pair of scientific sleuths answer your perplexing questions. Ask them anything!

  

• How too much iron can harm your health

  Iron helps transport oxygen around the body, but too much can lead to tissue damage

  Duration: 4:01

• Should fluoride be added to drinking water?

  Evidence suggests that water fluoridation can help prevent tooth decay

  Duration: 3:45