Did the polar vortex kill off some harmful and invasive insects? Professor Mike Raupp explains how cold weather impacts these invaders.
Emerald Ash Borers
Mike informs CBS Baltimore: “This baby has killed 100 million ash trees nationwide,” said Raupp. “Did the polar vortex kill it here in Maryland? No, it did not. It has to go to minus 23 degrees fahrenheit before we see mortality in that guy.” Read more>>
Mike informs WUSA9's VERIFY: "Scientists have determined the super cooling point for stink bugs. It is about 6 degrees Fahrenheit. This means that when temperatures dip below this point, lethal ice crystals form in the cells of the bugs," Raupp said. "So, yes many areas went to single digits or below and this could result in high levels of mortality..but here is the catch. This is for stink bugs in UNPROTECTED locations. The stink bugs in people's attics where temps did not hit 6 will be fine." Read More>>