The northern flank of the Martin Fire in Northern Nevada is seen from the air July 10. The nearly 450,000-acre fire highlights the danger posed by invasive species of cheatgrass. (Bureau of Land M …

The northern flank of the Martin Fire in Northern Nevada is seen from the air July 10. The nearly 450,000-acre fire highlights the danger posed by invasive species of cheatgrass. (Bureau of Land Management)