If countries' greenhouse gas emissions continue unchecked, one in every six species on the planet could go extinct [by 2050].
That is the finding of new research published this week in the journal Science. Climate change is a big factor in what has been tagged "The Sixth Extinction," potentially the worst die-off in Earth's history since the dinosaurs disappeared 65 million years ago. Ecologists warn it could threaten our economy, food security and human health.
"Imagine if we lose an important predator for an agricultural pest," said Mark Urban, an expert in ecology and evolution at the University of Connecticut and author of the new study. "Suddenly we have a major pest problem that threatens our ability to grow food."
Plants, animals, birds and insects on land and in oceans are already struggling to adapt. Their habitats are shifting in response to warming temperatures, as rainfall patterns change, and as the other species they rely on for nourishment or protection shift as well. The American pika, a small mouse-like mammal intolerant of heat, for example, has already disappeared from more than one-third of its known mountain habitats.
Read more at Climate Change Could Wipe Out 16 Percent of World's Species
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