Before the colonial era, 100,000s of people lived on the land now called California, and many of their cultures manipulated fire to control the availability of plants they used for food, fuel, tools, and ritual. Contemporary tribes continue to use fire to maintain desired habitat and natural resources.
What happens when an invasive, carapaced, and clawed, alien predator arrives in your pond? Do you change your daily habits to avoid drawing dangerous attention? Bulk up to make yourself a tougher target? If you an Iberian water frog, you do both.
Risk analysis finds savings for homeowners and local governments of excluding invasive pests like the emerald ash borer outweigh added cost to imported goods.
Third US National Climate Assessment released today.