A huge glass walkway, called the Skywalk, extends twenty-one meters from the edge of the Grand Canyon.

VOA: special.2009.10.07

Musical performers also included Madonna,Jay-Z,Rihanna, Bono and the Edge.

VOA: special.2010.02.01

"How do you make sure you are designing a system where you are going to constrain risk taking, you can prevent crises from spreading,and -- if a major institution managed itself to the edge of the abyss -- that we are able to put them out of their misery."

VOA: special.2010.04.16

And developers,logging companies, and strip-mine operators on the edge of the swamp can easily upset the delicate balance of nature in the area.

VOA: standard.2010.03.29

Working at the leading edge of research on cellular biology and genetic skin disorders, Fuchs was the first to precisely describe keratins - the principal structural proteins of skin cells - and identify diseases caused by mutations in the keratin gene.

VOA: standard.2010.03.29