Research uncovers more evidence for possibly decades-long droughts. Climate change is the likely culprit in effects that may challenge infrastructure and agricultural output throughout the century.
Although California’s current four-year dry spell may not be directly related, climate scientists have discovered evidence suggesting that the western states may have to contend with decades-long droughts. These so-called "megadroughts" would have a magnitude unprecedented for at least the past thousand years.
The hypothesized cause is nothing new: "research suggests that rising temperatures connected to climate change—not necessarily a decrease in precipitation—will boost the risks of drought far beyond that caused by historic natural variability." Increased evaporation will make it difficult to retain existing reservoirs, while a hotter climate will drive greater demand for irrigation and municipal water.
Eric Holthaus reports on the scientists' methodology and potential wide-reaching effects. Long-term, these may include economic repercussions and lifestyle changes for "tens of millions of people from San Francisco to Las Vegas and from Dallas to Des Moines."
Read the full story: The United States of Megadrought
Wildfires and Climate Change
Study links wildfires to climate change.
Department of the Interior Forced to Intervene on the Colorado River
More questions than answers on the Colorado River this week as the federal government failed to deliver on threats to force Southwest states to cut back on water use.
Declining Water Levels Trigger ‘Stage 1’ Drought Response in Austin
The effects of the megadrought in the American Southwest are reaching into Texas.
Planetizen Federal Action Tracker
A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.
Amtrak, CN end decades-long dispute with eight-year agreement
The new operating agreement establishes an updated framework for the companies to work together, including processes to resolve disputes.
Northwest rail fans eager for Sept. 30 debut of Amtrak’s Airo fleet
Get ready for that new train smell and more seats. But they won’t go faster or run more frequently on the Cascades route in Washington and Oregon.
Brightline Florida files for bankruptcy
The transit company is over $5 billion in debt.
St. Louis Metro to test if single-car trains can reduce operating costs, maintain rider satisfaction
The pilot program will run from October to spring 2027, and begin with one single-car train operating on Metrolink’s Red and Blue lines.
Pennsylvania is building data centers in abandoned mines
Housing data centers in mines provides an alternative to destroying local forests and may spare residents from data centers’ noise and air pollution.
FREE Course: Walkable City 1: Why Walkability?
After describing his path towards focusing on walkability as the essence of good planning, Jeff Speck marches through his five principal reasons for making more walkable places.
Reinventing Malls: Planning Alchemy—Turning Gray Fields Into Gold
The course focuses on the opportunities and imperatives that shape reinvention of mall sites.
City of Thousand Oaks
City of Wisconsin Rapids
Harvard University Graduate School of Design
The Architects Foundation
University of Cincinnati Online
The Pocatello Development Authority
The Urban Renewal Agency of the City of Pocatello