Environmental officials in Rhode Island are preparing for an attack from a pine-killing beetle.The southern pine beetle has travelled north as the climate warms. Scientists first discovered the species in the state in 2015. The rice-size beetles chew tunnels under the bark that disrupt the flow of nutrients and kill the pines in a few months. Trees ooze toxic resin as a defense. Officials use traps that mimic trees and contain pine scent. Beetles are lured into the traps and killed. The state has also used burns to help forest health.