While lightning is the most common source of fires in the U.S., according to the National Fire Protection Association, investigators were able to rule that out quickly.

The flammable Tasmanian blue gum has caused friction among Californians in the past for its role in wildfires. Scientists say the fire-loving tree is one factor in a complex story of climate change.

A mother says a misdiagnosis cost her one-and-a-half-year-old son his life as Nevada does not have a comprehensive children's health system.