It found that a tree’s growth rate increases with its size, in some cases adding the mass of a small tree every year.
That has huge implications for the amount of carbon dioxide an older tree can absorb.
“One of the analogies I use is if you’re managing a sports team, you’ve got to know who your star players are." says forest ecologist Nathan Stephenson with the USGS, and the study’s lead author.
"This would be the equivalent of discovering that your 90-year-old players are the stars of the team," he says.
A new study shows fire-fighting foam containing highly fluorinated chemicals is contaminating drinking water supplies around many of the nation's military bases, airports and industrial sites.
Update 8:00 p.m. Sunday: Crews are making "good progress" on the Cold Fire in Yolo County, now at 60% containment. In Monterey County, the Soberanes Fire remains at 45% containment with wind creating an additional challenge for firefighters.
The Soberanes Fire near Big Sur is burning in a rugged area that hasn't "seen fire in decades." The wildfire is 45 percent contained at 57,500 acres.
When urbanites encounter honey bees, some run away in fear while others dream of honey. Two women are on a mission to help people feel more at ease with bees while boosting the urban ecosystem.
The drought intensified over the last week in the Western U.S. as the region swelters under a heatwave and firefighters battle major wildfires.