Complex sentence: In addition to starting an online science-fiction museum, he is a voting member of SFFWA, the Science Fiction and Fantasy Writers of America, and his science fiction stories and articles have been published in a number of monthlies including Omni Magazine.
Split into simpler sentences: In addition to starting an online science-fiction museum, he is a voting member of the Science Fiction and Fantasy Writers of America. His science fiction stories and articles have been published in a number of monthlies including Omni Magazine.