Sifrhippus, which lived 56 million years ago, shrank from about 12 pounds to about eight and a half pounds as the climate warmed over thousands of years, researchers report.

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Side Effects: Sifrhippus, the First Horse, Got Even Tinier as the Planet Heated Up

Scientists don’t know if hurricanes are currently getting worse because of climate change, but many say they will get more intense as the climate warms.

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As Climate Changes, Scientists See Irene as a Harbinger

Shifts in the climate over the past three decades are linked to a 5.5% decline in global wheat production, a study suggests.

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Climate shifts ‘hit wheat yields’

Shifts in the climate over the past three decades are linked to a 5.5% decline in global wheat production, a study suggests.

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Climate shifts ‘hit wheat yields’

Birds embarking on long distance migrations are more vulnerable to shifts in the climate than ones making shorter journeys, a study suggests.

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Warming threat to long haul birds