This little black box could change how we study one of the world's biggest water quality issues. Scientists have created this new nitrate test kit. The dull black plastic of the device on Joshua ...

LITTLE BIT, AND WE’LL CHECK BACK IN WITH YOU SOON. RIGHT NOW, MUCH OF CENTRAL IOWA IS STILL UNDER A LAWN WATERING BAN. IT’S DUE TO HIGH NITRATE LEVELS IN OUR WATER SOURCES. YOU’RE TAKING A LOOK AT ALL ...

The dull black plastic of the device on Joshua Pearce's desk belies its usefulness. Pearce picks up the box, which has a switch on the side and a small opening on top. A handful of vials sit in a bag ...

Much of central Iowa remains under a lawn watering ban due to elevated nitrate levels in water sources. While officials assure residents that tap water is safe to drink, discrepancies between at-home ...