emission

The thought of an artificial tree usually excites memories of building and ornamenting a Christmas centerpiece. But here's an innovation that will put those plastic branches to shame: scientists at Columbia University are developing a structure that can capture carbon 1,000 times faster than a real tree.

Klaus Lackner, a professor of geophysics at the university, has been working on the project since 1998, according to a CNN report, and is optimistic about a near-future application.

Modern improvements in coal-fired power plants have reduced carbon emissions, but Lackner is seeking a different function. The "tree" would be used to trap carbon that has already been emitted into the air by car gasoline or airplane fuel, CNN reports.

Unlike the real thing, the synthetic "tree" doesn't need direct sunlight, water, a trunk, or branches to function, as it looks more like a cylinder than a soaring Redwood. The concept, which Lackner says is flexible in size and can be placed nearly anywhere, works by collecting carbon dioxide on a sorbent, cleaning and pressurizing the gas, and releasing it. Similar to the way a sponge collects water, the sorbent would collect carbon dioxide.… Read more

Swedish-Japanese phone maker Sony Ericsson on Thursday announced targets for reducing CO2 emissions.

The initiative, part of its pre-existing GreenHeart program launched in September 2008, is intended to reduce emissions by 20 percent across internal operations and by 15 percent over the full life cycle of its products by 2015.

Sony Ericsson plans to roll its green strategy into its entire portfolio over time, which is different from focusing on individual green products, such as Nokia's Green 3110 or Motorola's Renew W233.

"We would rather have mainstream models that we sell in large quantities than one particular … Read more

The worst of the global-warming effects can still be reversed, if proper steps are taken fairly quickly to reduce greenhouse gas emissions, according to an analysis by the National Center for Atmospheric Research.

A team led by Warren Washington, a senior scientist at NCAR's Climate and Global Dynamics Division, ran various climate-predicting scenarios with a Community Climate System Model run through a global supercomputer. Most notable is the simulation of what would happen in a world continuing on a path of unchecked human-made emissions of greenhouse gases versus one in which emissions are cut globally by 70 percent.

The … Read more

Biofuels are on the way up, while carbon emissions are on the way down, a global airline industry spokesman said Tuesday at the annual Aviation and Environment Summit in Geneva.

After a successful run of pilot programs from Continental, Virgin, Air New Zealand, and JAL, sustainable biofuels are on track to be approved by the International Air Transport Association (IATA) for wide commercial use in planes by 2010 or 2011, Giovanni Bisignani, director general of the IATA, said in a speech given at the summit.

The IATA includes more than 230 airlines that make up about 93 percent of the … Read more

A new campaign to improve automotive fuel efficiency worldwide by 50 percent by the year 2050 was announced at the Geneva Motor Show on Wednesday.

The Global Fuel Economy Initiative and its "50 by 50" campaign has the backing of leaders of four major international organizations: David Ward, director general of the FIA Foundation; Nobuo Tanaka, the executive director of the International Energy Agency; Jack Short, the secretary general of the International Transportation Forum; and Achim Steiner, the executive director of the United Nations Environment Program (UNEP).

Car companies, the "50 by 50" report (PDF) says, … Read more

It's not for road trips, but the van that Zap has introduced at the National Automobile Dealers Association convention might just ease the carbon burden for very local transport.

The Zap Shuttle, which can hold five people, is touted as the nation's first 100 percent plug-in, rechargeable electric van. It's meant to replace small shuttle vans that you see going from airport terminals to rental lots and around other short-range areas such as corporate headquarters, college campuses, indoor warehouses, and sports arenas.

The mini-van has optional accessories, such as solar panels, for prolonged use. It has a … Read more

In signing two executive orders on Monday, President Barack Obama made the first moves in a bold multi-pronged strategy to reshape energy policy and spur technology innovation.

At a press conference, the president ordered the Department of Transportation to establish rules by 2011 to raise fuel efficiency to an average of 35 miles per gallon by 2020.

He also ordered the Environmental Protection Agency to immediately review the denial of a waiver that would allow California and other states to set limits on tailpipe emissions.

In Washington, D.C., the moves signal a sharp change in direction from the Bush … Read more

Update 10:30 a.m. PST: Added new information, including comments from Rep. Henry Waxman (D-Calif.) and Sen. George Voinovich (R-Ohio).

President Obama on Monday signed an executive order directing the Environmental Protection Agency to immediately review its denial of California's request to set auto emissions standards stricter than the national standards, saying, "the days of Washington dragging its heels are over."

Obama commended California for trying to forge tougher fuel efficiency standards and said, "Instead of standing as a partner, Washington stood in their way."

The president also said new fuel efficiency standards should … Read more

One-third of China's carbon emissions come from manufacturing electronics and other goods that are then exported worldwide, according to a July report in the journal Energy Policy.

The findings come from researchers led by Christopher Weber, a professor of civil and environmental engineering at Carnegie Mellon University.

Researchers measured 1.7 billion metric tons of carbon dioxide resulting from China's exporting industries in 2005. That rose from 760 million tons in 2002 and from 230 million tons in 1987, based on an analysis of economic and emissions reports from China.

In that time, carbon emissions from making electronics … Read more