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How rain in Africa drives a butterfly mass migration to Europe

In a study published this week, scientists suggest that rainfall in sub-Saharan Africa, which controls the growth of vegetation, has a dramatic impact on the number of painted lady butterflies that summer in Europe — more than 4,000 miles away.

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Researchers warn of 'unexpected implications' as climate risks converge

Researchers warn of 'unexpected implications' as climate risks converge

If India's water-short farmers were to adopt more efficient methods of irrigation, cutting evaporation from their fields, farmers in East Africa might see less rainfall - and worsening drought - within five years, scientists warned Monday.

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