non-reneable energy

Science, Tech & Environment

Geo answer

Today's Geo Quiz focuses on four cities -- La Paz, Bolivia -- Dar Es Salaam, Tanzania -- New Delhi, India -- and Sydney, Australia. The question is which one has the highest gasoline prices. We had reporters check them out. The answer is Dar es Salaam. A gallon of gasoline in the capital of Tanzania costs 5 dollars and 6 cents.

Business, Finance & Economics

Ghana's new riches

A British company discovered massive oil reserves off Ghana's coast last year. The prospect of greater prosperity has excited many Ghanaians. But others fear the new wealth will bring new problems. The World's Laura Lynch reports.

Arts, Culture & Media

The noise in Cairo

Noise pollution is especially bothersome in highly populated cities. The Egyptian capital Cairo is one of them... but for Cairenes, their city just wouldn't be the same without all that commotion, as Daniel Estrin reports.