Storm Reports Log the Hail Size a Viral Clip Only Guesses
X promotes a hailstone photo into a record, but the storm-reports log grades hail to the hundredth of an inch and waits for a survey before it calls a tornado.
Life
CDC Times the Measles Shot to a Summer Departure Date
X keeps measles a blame contest, but the CDC travel record turns it into arithmetic — two MMR doses at least two weeks before a summer flight, or the odds stay against you.
AirNow Grades the Wildfire Smoke a Hazy Sky Hides
X argues whether wildfire smoke is real or hype, but AirNow prints a number from 0 to 500 for your block, and anything over 300 is hazardous while the orange-sky photo settles nothing.