Bush meat has been a critical part of the Malagasy diet, warding off anemia and malnutrition. The challenge: Balancing the needs of local people in cases where tasty wildlife is also critically endangered.
Every year, millions of Sikhs flock to the holy city of Amritsar in northern India, adding heavily to the city's carbon footprint. Now, officials and activists are encouraging environmentally friendly practices such as using solar energy and reducing waste.
Using a mobile gas sensor, researchers have found more than 4,000 significant natural gas leaks while driving through Boston-area roads. The city's gas infrastructure is currently being fixed up, but methane in the leaked natural gas has the potential to harm trees and dry out soil.
Fuel-economy standards are set to double by 2025. Electric cars could help reach that goal, but consumers just aren't buying them on a large scale. Beloved by niche markets, the cars face similar challenges as when they first appeared over 100 years ago: a higher price than gas cars and concerns over battery life.
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