Cement production is notorious for generating large amounts of C02. Now a Stanford professor claims to have developed a new process that will eliminate the problem.
"[F]or every ton of ordinary cement, known as Portland cement, a ton of air-polluting carbon dioxide is released during production. Worldwide, 2.5 billion tons of cement are manufactured each year, creating about 5 percent of the Earth's CO2 emissions.
When [Stanford Professor Brent] Constantz learned about the high CO2 levels, he thought he could do better. Constantz says he has invented a green cement that could eliminate the huge amounts of carbon dioxide spewed into the atmosphere by the manufacturers of the everyday cement used in concrete for buildings, roadways and bridges.
He claims his new approach not only generates zero CO2, but has an added benefit of reducing the amount of CO2 power plants emit by sequestering it inside the cement.
Portland cement has a track record of more than 100 years, and any new material would have to get incorporated into building codes."
FULL STORY: Green cement may set CO2 fate in concrete
How Might Tariffs and Deportations Affect Affordable Housing Development?
Many affordable housing developers worry Trump’s proposed taxes on imports and crackdown on immigration will be detrimental to the industry. Others hope deregulation reduces development costs enough to offset those effects. What’s the most likely outcome?
E-diggers Pave Way for Cleaner, Greener, Quieter London
London power workers are trialing zero-emission electric diggers that remove more than 200 tonnes of CO2 emissions and 75% of noise pollution from their work in the capital.
Prefab Custom Homes: Urban Multi-Family Game Changer
Steve Glenn, CEO of Plant Prefab, shares how his company is infiltrating single and multifamily housing markets with custom designed prefabricated homes to deliver healthy and sustainable buildings by design and at scale.
San Diego to Rescind Multi-Unit ADU Rule
The city wants to close a loophole that allowed developers to build apartment buildings on single-family lots as ADUs.
Has President Trump Met His Match?
Doug Ford, the no-nonsense premier of Canada's most populous province, Ontario, is taking on Trump where it hurts — making American energy more expensive.
Study: London ULEZ Rapidly Cleaning up Air Pollution
Expanding the city’s ultra low-emission zone has resulted in dramatic drops in particle emissions in inner and outer London.
San Jose Mayor Takes Dual Approach to Unsheltered Homeless Population
In a commentary published in The Mercury News, Mayor Matt Mahan describes a shelter and law enforcement approach to ending targeted homeless encampments within Northern California's largest city.
Atlanta Changes Beltline Rail Plan
City officials say they are committed to building rail connections, but are nixing a prior plan to extend the streetcar network.
Are Black Mayors Being Pushed Out of Office?
The mayors of New York, St. Louis, and Pittsburgh all stand to lose their seats in the coming weeks. They also all happen to be Black.
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.
Planning for Universal Design
Learn the tools for implementing Universal Design in planning regulations.
Resource Assistance for Rural Environments
City of Edmonds
City of Grandview
Harvard GSD Executive Education
UCLA Lewis Center for Regional Policy Studies
City of Piedmont, CA
Great Falls Development Authority, Inc.
HUDs Office of Policy Development and Research