Scientists discover fire records embedded within sand dunes

Knowing how the frequency and intensity of wildfires has changed over time offers scientists a glimpse into Earth's past landscapes, as well as an understanding of future climate change impacts. To reconstruct fire records, researchers rely heavily on sediment records from lake beds, but this means that fire histories from arid regions are often overlooked. Now, a new study shows that sand dunes can serve as repositories of fire history and aid in expanding scientific understanding of fire regimes around the world.