Ancient Warming Caused Huge Spike in Temps, Study Says

Publication: National Geographic News   Date: December 19, 2007   View Article

What started out as a moderate global warm-up about 55 million years ago triggered a massive injection of greenhouse gases into the atmosphere that sent temperatures skyrocketing, a new study says.

The finding suggests that today’s temperature rise may just be priming the planet for a carbon belch of epic proportions.

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