Coal ash retention ponds are so numerous and so toxic that they are now considered to be a potential threat to national security.
Back in December of 2008, a coal ash pond in Tennessee burst its banks and flooded some 300 acres with an estimated billion gallons of toxic sludge. Now there are concerns that the nation's other 44 such sites also pose a grave threat to surrounding communities.
We all knew the problem was serious. Now it turns out that it's so bad that the public can't be informed where those sites are. According to the Huffington Post,
"the Department of Homeland Security has told Sen. Barbara Boxer (D-Calif.) that her committee can't publicly disclose the location of coal ash dumps across the country.
The pollution is so toxic, so dangerous, that an enemy of the United States -- or a storm or some other disrupting event -- could easily cause them to spill out and lay waste to any area nearby."
FULL STORY: Coal Ash Spills Too Dangerous To Reveal To Public, Says DHS

Houston Apartments To Be Demolished for Freeway Widening
Despite a federal hold on the controversial freeway widening project, the Texas Department of Transportation is pushing ahead with the demolition of an apartment complex in downtown Houston.

San Francisco Just Ended Single-Family Zoning
The San Francisco Board of Supervisors voted to Tuesday to eliminate single-family zoning, but pro-development advocates say additional changes are needed to unleash a wave of construction.

Land Banking to Prevent Transit-Oriented Displacement in Los Angeles
The Los Angeles County Metropolitan Transportation Authority (Metro) will implement a new land banking program to mitigate gentrification and displacement around future transit lines.

Transit-Oriented Walking Tours Highlight the Value of Density
Housing advocates in Connecticut are leading walking tours that fight misinformation about transit-oriented development and emphasize the benefits of increased density.

State Reports Seeks To Guide Warehouse Development in New Jersey
With demand for sprawling e-commerce warehouses growing, New Jersey’s State Planning Commission has released a series of documents outlining best practices for cities examining warehouse proposals.

Manhattan Congestion Pricing Could Start in 2023
The Metropolitan Transportation Authority has resubmitted its environmental impact assessment to federal officials, who sent the agency over 400 additional questions earlier this year.
Texas A&M AgriLife Extension
Lehigh Valley Planning Commission
City of Rolling Hills Estates
HUD's Office of Policy Development and Research
HUD's Office of Policy Development and Research
Harvard Graduate School of Design Executive Education
City of Apache Junction
City of Helena
Gallatin County, Montana
Urban Design for Planners 1: Software Tools
This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.
Hand Drawing Master Plans
This course aims to provide an introduction into Urban Design Sketching focused on how to hand draw master plans using a mix of colored markers.