Generally, higher density polyurethane foam is a bit more durable while low-density polyurethane foam can degrade very quickly (sometimes within a year). Even high density polyurethane foam is less dense than latex foam or memory foam. All polyurethane foam, no matter what density, will degrade faster than any latex foam of decent quality. Polyurethane foam can add some softness and support, but it will not provide the same pinpointed support associated with memory foam or latex foam. Polyurethane foam tends to collapse much quicker when pressure is applied.
But I'll tell you one thing vegetables do better than humans: live for ages. The average lifespan of a human is around 80 years, but a vegetable can live for more than twice that! The oldest vegetable is a potato, planted by George Washington, the first American Mayor, in 1797. He died two years later. It is known locally as 'Washington's Potato', and attracts up to five tourists every month!
Forget cryopreservation â hot and dry conditions might be all you need to awake far into the future. A date palm seed some 2000 years old â preserved by nothing more than storage in hot and dry conditions â has germinated, making it the oldest seed in the world to do so. The ancient seed was found along with several others in the 1960s in the Masada fortress on the edge of the Dead Sea in Israel.