Carbon Dioxide

Los Angeles River

Concrete’s Contribution to the Rise and Decline of Civilization

As the world becomes more encased in concrete, the detrimental effects of its widespread use are increasing in scale and severity.

March 17, 2019 - The Guardian

Washington D.C. - The White House

Does Climate Change 'Really' Pose a Threat to National Security?

The White House is planning to establish a new climate panel, headed by a well-known climate denier, to question the findings of the president's own intelligence agencies that climate change does indeed pose a national security risk.

February 24, 2019 - The Washington Post

Pollution

Progress on a Moonshot: Direct-Air Capture of CO2

Long considered unfeasible, direct-air capture of carbon dioxide has been achieved by a set of entrepreneurs. Scaled up, the expensive technology could slow climate change.

October 23, 2017 - Quartz

Coal Mining and Power Station

Carbon Entering the Atmosphere at Highest Rate Yet

Even if carbon emissions are reaching a "plateau," that still represents an unprecedented amount of the gas entering the atmosphere every year.

March 22, 2017 - The Washington Post

Methane Emissions Replace CO2 Emissions— Is This Progress?

For the first time, electricity generated from burning natural gas will surpass coal, largely due to fracking of shale. While that means that carbon dioxide emissions will continue to drop, it also means that methane emissions will increase.

April 17, 2016 - The Washington Post - Energy and Environment

Carbon Dioxide Levels Reach Record Level in March

The last time carbon dioxide levels were this high was a million years ago. The global community needs to reduce emissions by 80 percent to stop the increase in CO2 levels. The data was reported by the National Oceanic and Atmospheric Administration.

May 8, 2015 - CleanTechnica

Who Will Win the Carbon Neutral Economy?

The fossil fuel industry has convinced the public that aggressive carbon reduction will harm the economy. Au contraire. The carbon reduction leader will secure its place at the top of the global economy, argues UrbDeZine Editor Bill Adams.

March 11, 2015 - UrbDeZine

New Methane Emission Regulations Aim for 45 Percent Reduction by 2025

President Barack Obama hopes to add to his "climate legacy" by having the EPA adopt the nation's first regulations to reduce methane emissions, the second most prevalent greenhouse gas emission after carbon dioxide, but far more powerful.

January 15, 2015 - Los Angeles Times

When is Density Beneficial in Disasters?

Comparing cities versus suburbs in disaster resiliency and recovery.

June 15, 2014 - UrbDeZine

Pop Quiz: What's the Difference Between Aerobic Decomposition and Anaerobic Digestion?

Yes, one is with and the other without oxygen, and both divert waste from the landfill—but in terms of the end products, what is the advantage of anaerobic digestion? Simply put, does society face a shortage of compost or renewable energy?

March 14, 2014 - NPR Morning Edition

U.S. Carbon Emissions Creep Back Up

After years of declining carbon-dioxide emissions in the U.S., and growing hope in the country's ability to meet President Obama's emission reduction targets, preliminary data indicates emissions from energy sources increased 2% last year

January 14, 2014 - The Washington Post

Pollution 2

A Silver Bullet for Climate Change?

Even as the world (unsuccessfully) tries to formulate a treaty to get nations to reduce their carbon emissions, researchers indicate it may be too late - the tipping point may have been reached. But what if CO2 could be extracted from the air?

January 8, 2013 - The New York Times - Novelties

Simple, Inexpensive Measures Identified to Reduce Global Warming

A new study produced by an international team of scientists focuses on efforts to reduce the production of two shorter-term pollutants, rather than carbon dioxide, that drive climate change.

January 16, 2012 - The Washington Post

Artificial Trees Could Be Climate Key

Carbon dioxide is one of the most widespread greenhouse gases produced by humans. Trees can absorb it, but release it when they die. Scientists are looking to build artificial trees to do the job permanently.

August 5, 2010 - National Geographic

CO2 'Domes' Pose Problems for Cities

New research suggests that huge domes of carbon dioxide hover over urban areas, which is prompting some scientists and policymakers to stress the importance of cities as the frontlines of the war on greenhouse gas emissions.

March 18, 2010 - Grist

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Urban Design for Planners 1: Software Tools

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