The discovery made by three Nobel Prize winning chemists is one of biology's most important safeguards against imperfection in DNA.
Cells must repair the thousands of bits of DNA damage they incur every day. These cellular mechanisms fend off cancerous tumors, and cancer researchers are working to harness their power.
The recipients of this year's Nobel Prize for Chemistry showed that DNA is far from static. Rather, it is bombarded by damaging forces, but our bodies know how to repair these precious strands.
Without natural DNA repair processes we wouldn't be here. This year's Nobel Prize winners in Chemistry helped us crack how it all works.