As we relentlessly march into the future scientists continue to discover stuff about stuff.  And you know what we don't forget the stuff we already knew about stuff.  That is the law of accelerating change in a nutshell.

Some of the stuff we learn about stuff we had to already know about some other stuff before we could figure out the new stuff about stuff.

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Now some fairly bright scientists at Harvard have come across a technique for "starving" cancer cells and thereby curbing their growth. 

When the researchers forced cancer cells to switch to the other form of pyruvate kinase in the lab by knocking out production of PKM2, the cells' growth was curbed.