Size is everything, ecologist finds

Natural ecosystems are as vulnerable as they are diverse. Environmental changes such as climate change, pollution or the spread of alien species can easily throw an ecosystem off balance. Researchers are therefore investigating ...

Misreading the story of climate change and the Maya

Carbon dioxide concentrations in Earth's atmosphere have reached 415 parts per million—a level that last occurred more than three million years ago, long before the evolution of humans. This news adds to growing concern ...

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