Emily Willingham is one of the best (if not the best) science writer I know covering issues including autism. Her work covers a more broad area than just autism, but it is her autism work I’ve read most closely. She does a great job of taking the hype out of the media versions of recent research and explaining what the research really says.
Forbes has shown itself wise enough to add her to their crew.
Her bio reads:
I am a science writer and editor and former biology professor with work published at Slate, Scientific American blogs, The Scientist, and others. I focus on how science filters to consumers and how consumers make decisions about science. Frequent honorable mentions: autism, parenting, and the news media.