Over on historyoftheancientworld.com, they feature an article on "The City in Decline: Rome in Late Antiquity." Learn more here.
Also, on livescience.com, they proffer "300-Year Drought Was Downfall of Ancient Greece" here.
Finally, on smithsonianmag.com, they ask "What Killed the Dinosaurs in Utah's Giant Jurassic Death Pit?" Find out more here.