Unlike most annual crops, the roots of long-lived trees can penetrate through soils to great depth to reach water (Figure 1). If we can’t tell how deeply roots penetrate, how do we determine when trees run out of water? One way is to monitor the moisture status of leaves and twigs, because these are connected through the sapwood in branches, stems, and roots to water deep underground.
A podcast interview with WE ACT For Environmental Justice co-founder Peggy Shepard on the past, present, and future of the environmental justice movement
The environment is facing tough times in a Trump presidency. Within an hour of his inaguration, all mentions of climate change were removed from the White House website. Since then, key environmental regulations have been slashed, and a bill has been introduced calling for the abolishment of the EPA. So what's an environmentalist to do? Below, Island Press authors share their advice for agitating for action on climate change and continuing to push an environmental agenda forward in the face of an unsupportive administration.
By Joe Landsberg, Richard Waring / On December 19th, 2016
Most people now accept that the world’s climate is changing rapidly as a result of human activities — mainly the direct emissions of carbon dioxide and other gases that trap heat radiating from the earth, causing the temperature of our small blue planet to rise. This is leading to all sorts of political, economic and ecological problems.
How to accumulate and leverage social capital to achieve healthy freshwater ecosystems, green infrastructure improvements, and triple-bottom-line benefits.