ScienceDaily: The study by a nine-member team from seven institutions — led by Jennifer R. Marlon, a doctoral student in geography at the University of Oregon — appeared online Sunday ahead of regular publication in the journal Nature Geoscience. The team analyzed 406 sedimentary charcoal records from lake beds on six continents. A 100-year decline in wildfires worldwide — from 1870 to 1970 — was recorded despite increasing temperatures and population growth, researchers found. “Based on the …