Pop Quiz: What's the average body temperature? Answer: 98.6° F (but you probably knew that). But a new study suggests that our new normal is a bit lower: 98.2° F. Why would that be? And does it matter?
Being an astronaut is a hazardous job. Not only are they exposed to higher levels of radiation and the fury of Earth's atmosphere upon re-entry, they must also handle a nearly 2° F increase in core body temperature.