ApharmdB writes: DNA & RNA are the basic building blocks of life. But could there be alternatives? Scientists have created HNA, CeNA, LNA, ANA, FANA and TNA in the lab. That is allowing for exploration of numerous questions such as 'What is the origin of DNA & RNA?' The journal article can be found here.
"More software projects have gone awry for lack of calendar time than for all
other causes combined."
-- Fred Brooks, Jr., _The Mythical Man Month_