Lesson #231

The earth may be getting warmer, but we’re getting cooler

For 150 years, the conventional wisdom has been that the normal human body temperature is 98.6 degrees. But new research suggests that the new normal is more than a degree cooler. Researchers aren’t exactly sure what’s causing the change, but one theory suggests it could be a sign that humans are getting healthier. Plus, learn the English expression “average out.”