N'Dour says his latest CD is an exploration of what Muslims have in common, and how Islam is practiced in Senegal, Egypt and across the Middle East.

NPR: Youssou N'Dour, 'Egypt' and Islam

In the past we've seen a tongue-based computer interface or two, the BrainPort sight-via-papillae solution, and this week, at the American Chemical Society's annual meeting, researchers from the University of Illinois at Urbana-Champaign introduced a sensor about the size of a business card that detects and identifies fourteen common sweeteners -- including Splenda, Sugar in the Raw, and Sweet'n'Low.

ENGADGET: Electronic tongue tastes, identifies sweeteners so you don't have to