This Sudanese kingdom thrived for more than 2,000 years in Africa, even ruling over Egypt for a century. But its identity has long been eclipsed by Egyptian history. ...read more
Yellowstone is one of the most active (and unjustly feared) volcanic calderas on Earth. What does the activity at Yellowstone look like on your average year? ...read more
Medical research supports the personal use of a bike helmet to protect from serious head trauma and traumatic brain injuries. But mandatory helmet laws are a more complicated matter among bicycle advocates. ...read more