JULIE 34 INTO GOODLETTSVILLE ABOUT 20. THANK YOU FOR NEW INFORMATION TONIGHT. HAVE YOU HEARD OF. >> CORN SWEAT. TURNS OUT WE AREN'T THE ONLY ONE SWEATING IN THIS EXTREME HEAT NEWS TO METEOROLOGIST ALEX LIBBY SPOKE WITH IN AGRICULTURAL PROFESSOR AT CSU TO LEARN MORE ABOUT THIS. INTERESTING TOPIC. ALEX. >> HAYLEY DOCTOR SEAN SAID THAT THE SCIENTIFIC TERM FOR CORN SWEAT IS TRANSPORATION AND HE SAYS ALL PLANTS DO IT. AND YOU CAN ACTUALLY SEE IT ON OUR WEATHER GRAPHICS. SO THIS IS THE DEWPOINT THAT MEASURES THE MOISTURE IN THE YOU CAN SEE IN THE LIGHT GREEN COLORS. DEW POINTS ARE IN THE 50'S AND 60'S. SOME NOT THAT HUMID. AND THAT'S WHAT WE'RE DEALING WITH RIGHT NOW IN TENNESSEE. BUT LOOK TO THE NORTH AND TYPICALLY THE FURTHER NORTH YOU GO THE LESS HUMID IT GETS. THAT IS NOT THE CASE. ITS GETTING MORE HUMID IN THE LOCATIONS WHERE THEY'RE GROWING THE MOST CORN. YOU CAN SEE CORN SWEAT. IT'S CAUSING SOME EXTREME HUMIDITY IN PARTS OF THE MIDWEST. OCHER TOP US AS THE COURT SWEAT. JUST LIKE WE DO. >> WHEN YOU HAVE A HIGHER TEMPTED STREET IS THERE'S A ABOUT WHAT WASN'T HAPPENING FROM BILL IS SO IS A LOT OF MECHANISM FOR THIS CUP. BUT AT THE SAME TIME WHITE CARS OUTSIDE IT KISSING BANDIT, HIGH HUMIDITY. >> TOP US AS MIDDLE TENNESSEE AND SOUTHERN KENTUCKY DO GROW ENOUGH CORN FOR TO IMPACT OUR WEATHER AS MUCH AS IN THE MIDWEST. BUT IF YOU WALK INTO A CORNFIELD DURING THESE HOT AFTERNOONS. YOU WILL NOTICE THAT IT FEELS MORE HUMID IN A SINGLE QUARTER PLANT CAN RELEASE AS MUCH AS 4 CUPS OF WATER