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.
"Regardless of the legal speed limit, your Buick must be operated at
speeds faster than 85 MPH (140kph)."
-- 1987 Buick Grand National owners manual.