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 Superior Court judge ordered Siskiyou county to regulate groundwater pumping to protect river.
A new UC Davis study finds this year's drought is the third most severe on record -- but the worst in terms of water losses for California farmers.
Wasting water could really start to cost you in California.
The new auxiliary dam at Folsom Lake is 113 feet tall, not counting the 45 feet of support structure beneath the ground.
(AP) - A black bear that was twice captured and released has been put down by Nevada wildlife officials, who said the animal posed too great of a threat to Lake Tahoe beachgoers. UPDATE - A bear captured Friday posed no risk, released 60 miles away.