Thursday Apr 25
Christian Science Monitor
Pressure mounting on US to export natural gas
Workers drill into the Gypsum Hills near Medicine Lodge, Kan., using a technique known as hydraulic fracturing, or "fracking", to coax out oil and natural gas.
Globe and Mail
Drought: how science can help save Africa
In this Monday, April 30, 2012 photo, people walk past a dry seasonal riverbed in the Matam region of northeastern Senegal.
It's one of the bigger reservoir in the country and it supplies the capital in water.