Wildfires in Hawaii Kill at Least 93
Almost 100 people have died and school life interrupted in Maui Co., Hawaii, after the state's deadliest wildfire in a century.
invasive species
How the emerald ash borer kills trees
An invasive species has hit ash trees in at least 35 states. The beetle from Asia spreads by hitching a ride on firewood.
Hybrid vigor increases in an invasive Fla. python
Invasive pythons in Florida have increased their chances of survival by interbreeding between Indian and Burmese pythons.
4 years running, a day of service in Flossmoor
100s of volunteers fanned out across Chicago's southland to mark a day of service and celebrate the legacy of Martin Luther King Jr.
Global trade brings many invasive species
With global trade and transport, thousands of species have spread into regions where they weren't originally at home, and some effects are harmful.