Greenhouse Gases

9:37am

Thu May 2, 2013
The Salt

Grocery Home Delivery May Be Greener Than Schlepping To The Store

Originally published on Mon May 6, 2013 8:20 am

Amazon Fresh delivery man Tim Wilkie totes food to a house on Mercer Island, Wash.
Joe Nicholson AP

Home grocery delivery sounds like a frill for people too lazy to schlep to the store. But having food delivered can be more environmentally friendly than driving to the store, researchers say.

Having groceries delivered can cut carbon dioxide emissions by at least half, compared to driving to the store, according to a new study. That's because the delivery truck offers the equivalent of a "shared ride" for the food.

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1:28am

Thu October 11, 2012
Science

Software Calculates City-Specific Carbon Footprint

Originally published on Thu October 11, 2012 1:58 pm

Bedrich Benes and Michel Abdul-Massih

One way to measure greenhouse gases is simply to capture them at the source: You put an instrument on a smokestack, for example. Cities, however, are full of cars, buses, factories and homes that all use fuel or electricity. No one really knows how much carbon dioxide, the main greenhouse gas, comes from each.

Ecologist Kevin Gurney says he can find out.

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3:46pm

Mon April 16, 2012
Environment

Electric Cars in Colorado Have Higher Carbon Emissions, Says Group

An electric car charger in California
Loco Steve/Creative Commons

 The electric car may be the next big hope for reducing carbon emissions, but one environmental advocacy group says just how effective these vehicles are at limiting emissions depends on where you are in the country.

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1:00pm

Wed September 7, 2011
Environmental Research

Three-Year Study Produces Global Portrait of Greenhouse Gases

HIPPO - The NSF/NCAR Gulfstream V aircraft in Anchorage, Alaska
Carlye Calvin Courtesy of UCAR

Scientists from Colorado and other national institutions are wrapping up a three-year research mission to study and measure greenhouse gases in the atmosphere.  It’s the most extensive airborne measurement of these gases to date.

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