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Earth & Environment

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booby chick

WILD WASTE  Nitrogen from the guano of seabirds, such as this red-footed booby chick, leaches into coral ecosystems and helps them stay robust.

monarch butterfly on tropical milkweed

MONARCH BEWARE  As the climate changes, lovely tropical milkweed popular in gardens may become even more of a danger to monarch butterflies than it is now.

pollution in Lahore, Pakistan

HAZY DAYS  Long-term exposure to air pollution, seen here blanketing the Pakistani city of Lahore in June 2018, contributes to chronic health problems. New research suggests it triggers millions of new diabetes cases each year.

Earth & Environment

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