Zuko's flames are red-orange, which are colors we considered to be "hot" because red-orange fire is more common than blue fire. Azula thinks with her head, Zuko thinks with his heart.

In the heart of South America, the Amazon rainforest, the world’s largest tropical forest, is a vital component of the planet's ecosystem, home to over 390 billion trees and countless species ...

The Blue Front Fire, burning in remote terrain near Alto and Ruidoso, is measuring 316 acres as of Wednesday night."I think this is minimal compared to what we've had earlier in the summer," Blue ...

The Blue 2 Fire is burning in Lincoln County north of Ruidoso. A mandatory evacuation order is no longer in effect around the Blue 2 Fire in southern New Mexico.

Also seeing the natural blue fire in nature was an amazing experience." Domi, 29, and Thomas, 34, a couple from Slovakia, overlooking the lake at the Ijen crater in Java, Indonesia.