Science & Technology

Air New Zealand Flies on Engine With Jatropha Biofuel Blend

By James Kanter The New York Times Some in the aviation industry say they could one day be flying the biggest jets across the planet without contributing to climate change — using biofuels. They also say that it will be easier...
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Pura Vida Wilderness: Exploring Guanacaste’s Volcanoes, Beaches, and National Parks

Three to five hours from San José, Guanacaste presents itself as a land of contrasts, where the warmth of...