1.   Feeding the orange glow, tons of nitrogen were released into the atmosphere by the worst wildfire season in three decades.

2.   It was the worst wildfire tragedy this season.

3.   Now, in the midst of the worst wildfire year in nearly half a century, a new round of finger-pointing is under way.

4.   Fire crews finally made progress Wednesday against the worst wildfire in Arizona history, though swirling wind tempered optimism and lightning stirred fear of new fires.

5.   Forest fires have chased thousands of residents from their homes throughout northern Canada in what officials call the worst wildfire season in a decade.