Young writers, apple-cheeked ones
(Entry title is a reference to a round I learned from a Libana album, albeit in a very different version from the one that link provides.)
Meant to mention that JJA is also compiling a list of published sf writers in their twenties. I think most of you who read this who qualify have already checked in with him, but figured it couldn't hurt to mention it. If nothing else, the comments are interesting; I didn't actually know the ages of a bunch of the mentioned writers.