The Washington Post has a very engaging interactive (that’s also accessible to Intermediate English Language Learners) called Sudan In Crisis: The Darfur Tragedy.
It joins several other informative links on Darfur that you can find on my website under Toward The Twenty-First Century.
Yes, the name of that section is a bit inappropriate. However, for part of the World History class I teach I use a supplemental textbook (that’s very accessible to English Language Learners) that’s about ten years old, and the sections on my World History page use the titles of the chapters in the book. It’s old, but it’s good.