Smog-choked Paris forces half of cars off roads

French authorities will on Monday put in place emergency traffic-limiting measures in Paris, as the City of Light and much of northern France suffers from a choking smog.

Peru's growing capital seeks to preserve Inca ruins

Puruchuco, an ancient Incan complex, sits at the fast-moving edge of Lima's real estate boom, forcing authorities in the Peruvian capital to get creative as they seek to preserve the archeological treasure.

US agency: Keep threatened status for green sea turtles

Hawaii's green sea turtles should continue to be classified as threatened because its population is small and nearly all of them nest at the same low-lying atoll, federal wildlife agencies said Friday.

Chinese airline completes cooking oil fuel flight

A Chinese airline on Saturday completed the country's first commercial flight using biofuel, made from waste cooking oil, as the government seeks to promote greater environmental sustainability.

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