This is TALK OF THE NATION. I'm Neal Conan, in Washington. In just over two months in office, Egyptian President Mohammed Morsi has asserted himself on several fronts. Just weeks after his election, he fired several senior defense officials, effectively seizing power from the military government that ruled after former President Hosni Mubarak stepped down.
This is TALK OF THE NATION. I'm Neal Conan in Washington. Students in many schools across the country will notice something new as classes' resume. Clifton High School in New Jersey, Garnet Valley High School in Pennsylvania, Ottumwa High School in Iowa, just three of the many schools that installed security cameras in hallways, classrooms, cafeterias, in buses and gymnasiums.
It was the absence of feathers that got conservation biologist Thor Hanson thinking about the significance of them. Hanson was in Kenya studying the feeding habits of vultures, and he noticed the advantages that vultures had relative to other birds because of their bare, featherless heads.
"Having lost their feathers allows [vultures] to remain much cleaner and more free from bacteria and parasites and disease," Hanson tells Fresh Air contributor Dave Davies.