Because of Kahn,experts say, one of the poorest countries in the world has one of the most beautiful public buildings on Earth.

VOA: special.2009.12.13

Most maps of the world show lines that are not on the Earth's surface.

VOA: special.2010.07.14

Earth Day Network works on environmental programs around the world.

VOA: special.2010.04.21

Swan set out to change that. Invited to speak to world leaders at the first Earth Summit in Rio de Janeiro,Brazil, in 1992 he outlined a plan.

VOA: standard.2009.12.10