How bark beetles use mob mentality to kill millions of California trees

There are killing machines on the loose in California and the entire Western region.

They’re found in packs and look for the weak but they’re not the scary predator you’d imagine. In fact, they’re about the size of a rice grain.

They’re called bark beetles.

A June 2016 Cal Fire report stated the ongoing drought in combination with the tiny insects are responsible for killing about 66 million trees in California since 2010. That’s up from 29 million trees in 2015 and 3.3 million in 2014, according to the report.

Source: How bark beetles use mob mentality to kill millions of California trees | ABC10.com