High Quality Content by WIKIPEDIA articles! Warm Worlds and Otherwise is a short story collection by Alice Sheldon that, under her pen name James Tiptree, Jr., was first published in 1975. This collection is notable for its introduction, "Who is Tiptree, What is He?", in which fellow Science Fiction author Robert Silverberg wrote that he found the theory that Tiptree was female "absurd", that the author of these stories could only be a man. When it was later revealed that Tiptree was a woman, a postscript to the introduction by Silverberg was added to the collection.