@CNN: In less than 200 years, humans have reversed a multimillion-year cooling trend, new research suggests https://t.co/5gTc1rhdQI https://t.co/5K6JtJ5cml

@CNN: In less than 200 years, humans have reversed a multimillion-year cooling trend, new research suggests https://t.co/5gTc1rhdQI https://t.co/5K6JtJ5cml