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.
The City of Elk Grove celebrated Earth Day Tuesday by opening the first-of-its-kind facility to collect hazardous and electronic waste.
One of the biggest battles at the California state Capitol two years ago is back for another debate. Hunting groups want to repeal the ban on using dogs to hunt bears and bobcats.
Rain and snow may not have pushed California out of its drought, but the late season precipitation will mean a little more water for State Water Project users. There is also relief for some federal Central Valley Project users.
Railroads plan to increase their shipments of crude oil by train throughout California. One lawmaker wants to make sure emergency planners can protect communities from potential train accidents.
(AP) -- An appeals court says federal officials should have consulted wildlife agencies about potential harm to a tiny, threatened fish before issuing contracts for water from the Sacramento-San Joaquin Delta.