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And its neighboring countries once formed most of the old soviet union, or u. S. S. R. Many of these old soviet republics differ from one another on the basis of ethnicity and religion. But within the Russian Federation itself, there are republics that could still fragment along cultural and political lines. One of these is dagestan. Dagestans historical and economic geographies help explain opposing centripetal and centrifugal forces within russia. As a largely Islamic Republic adjacent to warring chechnya dagestan now receives new scrutiny in the war on terrorism. To help explain the differe...

Iudad juarez, mexico is a squatters settlement called anapra. In 1980, this was empty desert. By the 1990s tens of thousands of residents have staked out small plots and constructed makeshift homes. Most tie into the power lines illegally and run lamp wires over the sand to light their homes. 1994 we visit Concha Martinez for the first time living in this tarpaper shack. Like thousands of her neighbors, she has no Running Water or sewers, no title to her land. A single mother, concha built this oneroom home for herself and her four children abel, 12, adrian, ten, wendy five, and the youngest, ...

Eileen Collins was the first woman to pilot a space shuttle, flying the shuttle Discovery with a crew that included Russian cosmonauts on NASA's 1995 STS-63 mission.

Former NASA astronaut Eileen Collins speaks at University of Nevada Reno

Here are some of our favourites from this week. By Yolanthe Fawehinmi.