Humans get most of the blame for climate change with little attention paid to the contribution of other natural forces. Now, scientists are shedding light on one potential cause of the cooling trend of the past 45 million years that has everything to do with the chemistry of the world's oceans.
How do we know that today's global warming is not some natural climate change cycle? Climate Central's Mike Lemonick explains. Watch science made simple with this segment of his "Bowtie Series."
In recent decades, Arctic sea ice has suffered a dramatic decline that exceeds climate model predictions. The unexpected rate of ice shrinkage has now been explained. Researchers argue that models underestimate the rate of ice thinning, which is actually about four times faster than calculations.