RNA interference - 26 July 2005
" The chemistry of fuel cells"
"Two wizards of supercomputing"
"The fastest moving glacier in the world"
Geneticists wanted to make an ordinary purple petunia more purple. Instead they got white flowers. Why? Quite by accident, the researchers found a secret defense system in living cells, a gene-silencing mechanism called RNA interference. It has become one of the hottest topics in biology and was the subject of the recently awarded 2006 Nobel Prize for Medicine or Physiology. In addition to the RNAi segment, the NOVA scienceNOW program, presented by Robert Krulwich, also featured a humorous description of the chemistry of fuel cells, complete with electrons attached to the...Read more