Tumbleweeds in Sacramento in 2011. Far from dusty ghost town relics, a new invasive species of tumbleweed studied by UC Riverside researchers is here to stay. Lezlie Sterling Sacramento Bee file ...

Q. Humans are held responsible for declines and extinctions of many plants and animals. Today’s “successful” conservation efforts are often programs designed to aid in the recovery of species we have ...

BISMARCK, N.D. (KXMB) — Dry conditions and high winds have led to a tumbleweed invasion around numerous homes in northwest Bismarck. The brown bushes have been rolling into yards, doorways, driveways ...

The gnarled icon of the Old West — ominously featured in movies as gunslingers square off on dusty streets and townsfolk shake behind curtained windows — rolled in over the weekend and kept rolling ...