News / Science & Technology

Scientists Discover Super Greenhouse Gas

FILE - In this Jan. 19, 2012 file photo, smoke rises in this time exposure image from the stacks of the La Cygne Generating Station coal-fired power plant in La Cygne, Kansas.FILE - In this Jan. 19, 2012 file photo, smoke rises in this time exposure image from the stacks of the La Cygne Generating Station coal-fired power plant in La Cygne, Kansas.
x
FILE - In this Jan. 19, 2012 file photo, smoke rises in this time exposure image from the stacks of the La Cygne Generating Station coal-fired power plant in La Cygne, Kansas.
FILE - In this Jan. 19, 2012 file photo, smoke rises in this time exposure image from the stacks of the La Cygne Generating Station coal-fired power plant in La Cygne, Kansas.

Related Articles

Video Proposed Pollution Rules Rattle US Power Industry

Nationwide public comment tour adds fuel to emissions debate

Multimedia High-Intensity 'Megafires' a New Global Danger

Drought, land use and a build up of fuel are some of the major factors behind the growth in megafires

Study Links Arctic Melting, Extreme Weather

Te loss of ice and snow is affecting the jet stream, which in turn affects weather patterns around the Northern Hemisphere.
VOA News
Scientists say they have discovered a man-made greenhouse gas 7,100 times as strong as carbon dioxide. More bad news: It has a lifetime of hundreds of years.

Researchers at the University of Toronto in Canada say the chemical – perfluorotributylamine (PFTBA) – is the most radiatively efficient chemical found to date, breaking all other chemical records for its potential to impact climate.

According to Angela Hong, who worked on the project, "radiative efficiency" describes how well a molecule can trap outgoing heat radiation from Earth. This metric indicates the potential for a molecule to impact climate.

“As it turns out, PFTBA has the highest radiative efficiency of all molecules in the atmosphere to date,” she said in an email.

PFTBA has been in use since the mid-20th century for various applications in electrical equipment and is currently used in thermally and chemically stable liquids marketed for use in electronic testing and as heat transfer agents.

Researchers say there are no known processes that would destroy or remove PFTBA in the lower atmosphere, meaning it could have a lifetime of hundreds of years.

Carbon dioxide is used as the baseline for comparison since it is the most important greenhouse gas responsible for human-induced climate change.

“Calculated over a 100-year timeframe, a single molecule of PFTBA has the equivalent climate impact as 7,100 molecules of CO2,” said Hong.

The results of the study appeared in the Geophysical Research Letters on November 27, 2013.

You May Like

Sydney Hostage-taker Failed to Manipulate Social Media

Gunman forced captives to use personal Facebook, YouTube accounts to issue his demands; online community helped flag messages, urged others not to share them More

UN Seeks $8.4 Billion to Help War-Hit Syrians

Effort aimed at helping Syrians displaced within their own country and those who've fled to neighboring ones More

Who Are the Pakistani Taliban?

It's an umbrella group of militant organizations whose objective is enforcement of Sharia in Pakistan 'whether through peace or war' More

This forum has been closed.
Comment Sorting
Comments
     
by: Pete Finnegan
December 11, 2013 8:44 PM
Yeah, but -- how much of it is there in the atmosphere? Wouldn't it be illegal to emit it into the atmosphere? The article doesn't answer important questions. More fear-mongering with incomplete information.

In Response

by: Pete Finnegan
December 17, 2013 10:11 AM
In reply to Todd St. Pierre: Whether the information is left incomplete due to a lack of intellectual rigor or due to laziness, the effect is the same. The article does not hesitate to make note of this chemical's "bad news" potential of remaining for "hundreds of years", and that "radiative efficiency" means how much a molecule can "impact climate". It does note that the chemical is "currently used in thermally and chemically stable liquids", which may be interpreted as saying that there is no danger, just after describing all of those potential dangers. This is another article with an agenda. It is meant to alarm the casual reader. Making excuses for the way it is written is like giving a trophy for participating. Also, and by the way, the photo caption says the stacks are emitting smoke, when it is obvious that it is steam. This is common tactic of the warmist crowd.

In Response

by: Todd St. Pierre from: San Diego CA
December 17, 2013 12:43 AM
Fear mongering? Yes, the article is incomplete, but perhaps a response of "more research needed" would add a more constructive direction, instead of conjuring denialist ignorance.

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
Putin: Russian Economy to Rebound in 2 Yearsi
X
December 18, 2014 5:13 PM
Russian President Vladimir Putin held his annual end-of-the-year news conference Thursday, tackling questions on the Russian economy, the crisis in Ukraine and Russian relations with the west. VOA's Jeff Custer reports.
Video

Video Putin: Russian Economy to Rebound in 2 Years

Russian President Vladimir Putin held his annual end-of-the-year news conference Thursday, tackling questions on the Russian economy, the crisis in Ukraine and Russian relations with the west. VOA's Jeff Custer reports.
Video

Video Nigerians Fleeing Boko Haram Languish in Camp Near Capital

In its five-year effort to impose Islamic law in northeastern Nigeria, the Boko Haram extremist group has killed thousands of people and forced hundreds of thousands to flee. Some of those who ran for their lives now live in squalor on the edges of the capital, Abuja. Chris Stein reports for VOA.
Video

Video Detained Turkish Journalists Follow Teachings of US-Based Preacher

The Turkish government’s jailing of critical journalists has sparked international condemnation and is being seen as an effort to undermine the followers of an ailing Turkish preacher based in the United States. VOA religion reporter Jerome Socolovsky has more.
Video

Video Will Pakistan School Shooting Galvanize Pakistan Against Extremism?

The attack on a military school in Pakistan’s northwest city of Peshawar left 141 dead, including 132 children. Strong statements of condemnation poured in from across the world. The country announced three days of mourning, and the leadership, both political and military, promised retribution. VOA's Ayesha Tanzeem looks at how likely the Pakistani government is to clamp down on all extremist groups.
Video

Video ‘Anti-Islamization’ Marches Increase Tensions In Germany

Anti-immigrant rallies in Germany have been building in recent weeks, peaking Monday night in the city of Dresden where tens of thousands of people turned out to demonstrate against what they call the ‘Islamization’ of the West. Germany has offered asylum to more Syrian refugees than any other country, and this appears to have set off the protests. Henry Ridgwell reports from London.
Video

Video Aceh Rebuilt Decade After Tsunami, But Scars Remain

On December 26, 2004 there was an earthquake in the Indian Ocean so powerful it caused the Earth’s axis to wobble a few centimeters. Onshore on the island of Sumatra, the resulting tsunami was devastating. A decade later, VOA Correspondent Steve Herman reports from Banda Aceh, Indonesia, where although there is little remaining evidence of the physical devastation, the psychological scars among survivors remain.
Video

Video Refugees Living in Kenya Long for Peace in the Home Countries

Kenya is host to numerous refugees seeking safe haven from conflict. Immigrants from Somalia face challenges in their new lives in Kenya. Ahead of International Migrants Day (December 18) Lenny Ruvaga has more for VOA News from the Kenyan capital.
Video

Video Turkey's Authoritarianism Dismays Western Allies

The Turkish government has been defiant in the face of criticism at home and abroad for its raids targeting opposition media. The European Union on Monday expressed dismay after President Recep Tayyip Erdogan lashed out at Brussels for criticizing his government's action. Turkey's bid to be considered for EU membership has been on hold while critics accuse the NATO ally of increasingly authoritarian rule. Zlatica Hoke reports.

All About America

AppleAndroid