New Research: Lawns Aren't Green

Lawns - long known to be the main culprit in urban water consumption, now can be blamed for another environmental woe - greenhouse gas producer in excess of whatever carbon it 'sinks'. The gas is nitrous oxide - 300 times more potent than CO2.

1 minute read

January 21, 2010, 8:00 AM PST

By Irvin Dawid


Grass, like most plants, has long been thought as instrumental to counteracting global warming by sequestering atmospheric carbon into the soil as well as converting carbon dioxide into oxygen. In this University of California at Irvine study, soon to be published in the journal Geophysical Research Letters, shows that the lawns cause far more emissions than they store in the soil.

"(G)reenhouse gas emissions from fertilizer production, mowing, leaf blowing and other lawn management practices are four times greater than the amount of carbon stored by ornamental grass in parks, a UC Irvine study shows. These emissions include nitrous oxide released from soil after fertilization. Nitrous oxide is a greenhouse gas that's 300 times more powerful than carbon dioxide."

Thanks to Bob Maginnis

Tuesday, January 19, 2010 in University of California @Irvine Press Office

Lake Powell with much of the water evaporated.

Desperate measures: Advocates weigh draining Lake Powell to fill Colorado River

Draining the reservoir could reduce evaporation losses by a couple hundred thousand acre-feet.

October 30, 2026 - Yale Environment 360

A road in north eastern Nebraska with power lines on either side, and grassy fields.

Eastern Nebraska is running out of electricity

Data centers and electrification are straining eastern Nebraska’s grid, throttling economic development.

November 6, 2026 - Grist

A rendering of a mall turned living space. People walk around a green space surrounded by apartments.

Malls are becoming the midtowns of the future

Mall and office park redevelopments are a generational opportunity to create new nodes of urbanity.

October 29, 2026 - Ben Schneider

A car drives through a puddle in NYC

NYC breaks ground on anti-flooding infrastructure project

New York City's new system will reduce stormwater flows to local sewers by 90%.

November 9 - Smart Cities Dive

Members of the Smoketown CLT gather for a photo

One Kentucky town’s secret to affordable housing

The Smoketown Community Land Trust has already built seven affordable homes for community members.

November 9 - Reasons to Be Cheerful

Two people stand under mesh coverings shaped like petals

Houston gains petal-shaped cooling infrastructure to make streets more ‘delightful’

The city has installed the pavilions along 15 blocks in Houston.

November 9 - De Zeen

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.