How RNAi Works

www.RNAiWeb.com describes how RNA interference (RNAi) works

Nova scienceNow  from PBS explains how RNAi works 

Informational movies on RNAi

From PBS

A wayward petunia leads to the discovery of modest little molecules with enormous medical promise.

From Nature

Learn about Gene expression, Gene silencing, and RNAi amplification.

What is RNA

Ribonucleic acid (RNA) is a biologically important type of molecule that consists of a long chain of nucleotide units.   What is RNA