Researchers reveal dust source on Tibetan Plateau

Dust deposited on a glacier's surface can reduce the albedo of the ice and increase absorption efficiency of solar radiation, which has a significant impact on glacier melting and global climate change.

Acai berry craze: boon or threat for the Amazon?

Working in the sweltering heat of the Brazilian Amazon, Jose Diogo scales a tree and harvests a cluster of black berries: acai, the trendy "superfood" reshaping the world's biggest rainforest—for better and worse.

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