Tumbleweeds are movie icons. We often see them rolling along in vast and desolate landscapes, acting as the supporting cast in scenes featuring Stetson-wearing cowboys. While tumbleweeds may be no ...

Tumbleweeds, also known as the Russian thistle (Salsola tragus), originated in Eurasia and were introduced to North America in the late 19th century. They were likely brought over accidentally in ...

It’s silent and windless. Yet one by one, like wolves in the night, tumbleweeds start gathering around them. “They’re following us,” the heroine cries. When her husband tries to intervene ...