In his greenhouse, Ragan Callaway pits spotted knapweed plantings (left) against native Montana grasses (right), trying to outwit the weed's chemical weaponry. Brian Smale Wayne Slaght is a rancher.

There may be 140 million miles between our home and the next planet over, but CR Anderson biology students are bringing the ...

There may be 140 million miles between our home and the next planet over, but Helena biology students are bringing the red planet and the International Space Station into their classroom.

For another native ground cover plant to stop weeds, see our guide on how to grow creeping juniper. This tough and resilient ...