* The problem with Scalia.
* "How the Taliban mastered the operational art of modern war."
* Many challenges await Egypt's first popularly-elected president.
* Looking for a new start in Ciudad Juarez.
* Liu Yang, China's first female taikonaut, returns to Earth.
* "The galaxy that shouldn't be there."
* Sequencing the DNA from 7,000-year-old bones of cavemen.
* Talking with Top Chef Masters winner Marcus Samuelsson.
* Simon Brew on the 'bizarre' Pixar backlash.