Cryotubes, are they real? you know how the master chief/john in the halo series goes to the cryotubes to prolong his life? well i was wondering, if we have that technology to freeze ourselves. (and successfully revive ourselves in a different time period.) I know that the halo universe takes place in 22nd century, but it was a thought. because my chem teacher rambled about how we have the technology to clone people, and this idea came to me. so yeah. can we successfully freeze ourselves as of today? (and revive)