Social Media Sidebar

Announcement

Please sign up, comment on articles and bring your friends!

Current poll

PlanetTech is asking:

What do you think about our new web site?

Love it, indeed
Really good solution
Same as old one
The old one was better
This is a new option

Quote of the day

We are all now connected by the Internet, like neurons in a giant brain.

 

Stephen Hawking

 

Satellite Images Show Massive Reduction In US Air Pollution

RATE THIS! +35
Posted in Science on 28th Jun, 2014 11:42 PM by AlexMuller

There is much less nitrogen dioxide in the air over the United States than there was a decade ago. The images (Original article) were produced by data collected by the Ozone Monitoring Instrument on NASA's Aura satellite and you can clearly see how much the levels of this pollutant have decline from 2005 to 2011.

 
Nitrogen dioxide can cause respiratory problems by itself, besides also reacting with "ammonia, moisture, and other compounds to form small particles," or particulates, that can worsen emphysema and other lung ailments, the EPA noted. The gas also contributes to the formation of ozone, which is an irritant and pollutant at ground level.
 
NASA credits the improvement in air quality to improved fuel efficiency in cars and "technology to reduce emissions of nitrogen dioxide and sulfur dioxide from coal-fired power plants." Generally, levels of nitrogen (and sulfur) dioxide began declining soon after enactment of the 1990 Clean Air Act Amendments, and have continued to fall. Overall, levels of nitrogen dioxide have declined by more than 50 percent since 2000, according to the EPA.
 
Of course, air quality isn't perfect, and could get better. "While our air quality has certainly improved over the last few decades, there is still work to do, ozone and particulate matter are still problems," NASA atmospheric scientist Bryan Duncan said. And about 142 million people still live in areas in the United States with unhealthy levels of air pollution, NASA noted.

Tags: airpollutionsmogozoneNASAenvironmentgas

Read original article » Back to category

Comments

Author: Guest
Posted: 2014-06-29
+2
Good news. We should be happy that air quality is improving and this just shows that making efforts in this direction can work! However, this should be seen as an encouraging first step, with lots more to follow before we can have healthy air quality
2 Replies
Author: Guest
Posted: 2014-06-29
+1
The new rule mainly targets coal-fired power plants, which emit more carbon than any other type of plant. There are more than 600 such plants in the US Reply
Reply
Author: Guest
Posted: 2014-06-29
+1
Yes, good news and some hope. Just recently we had a new study sponsored by NASA's Goddard Space Flight Center that has highlighted the prospect that global industrial civilisation could collapse in coming decades due to unsustainable resource exploitation and increasingly unequal wealth distribution.
4 Replies
Author: Guest
Posted: 2014-06-29
+2
If indeed this study offers good evidence that our civilisation is moving towards an inevitable collapse, it would be good to know what can be done about it? Reply
Author: Guest
Posted: 2014-06-29
+1
More than that, some are point out that the worst-case scenarios are by no means inevitable. Appropriate policy and structural changes could avoid collapse, if not pave the way toward a more stable civilisation. We have to take notice and take action! Reply
Author: Guest
Posted: 2014-06-29
+0
I think that this NASA-funded study and model offer a highly credible wake-up call to governments, corporations and business - and consumers - to recognise that 'business as usual' cannot be sustained, and that policy and structural changes are required immediately!!!!! Reply
Reply
Author: Guest
Posted: 2016-12-26
+0
Nydelige bilder som alltid her inne hos deg. Jeg fikk truger til jul (tror de er lik dine) som jeg allerede har prøvd ut på fjullter. Syns ikke de var så verst jeg. Gikk mye bedre enn jeg trodde. Tror de kostet 1200 kr, men svigers prutet de ned til 900. Pene knallblå øyne du har ;-) Reply


 

Recent headlines

  • Posted in Hardware on 2017-07-21 13:25:35
    Elon Musk thinks a moon base would fire up public support.....read more
    Posted in Software on 2017-07-21 13:01:28
    Artificial intelligence can help better diagnose.....read more
    Posted in Medicine on 2017-07-21 12:57:01
    Blood test detects Alzheimer’s plaques building up in.....read more
    Posted in Medicine on 2017-07-20 18:29:45
    9 lifestyle changes can reduce dementia risk..read more
    Posted in Science on 2017-07-20 18:11:16
    Elon Musk has new affordable Mars plan with near Earth.....read more
Posted in Business on 2013-10-10 01:33
China is working towards a manned lunar mission in about.....read more
Posted in Business on 2013-10-20 07:17
Spacex says China is their main competitor for commercial.....read more
Posted in Software on 2013-10-20 06:43
Pirate Bay Browser Clocks 1,000,000 Downloads..read more
Posted in Medicine on 2013-10-10 02:10
Google reportedly investing hundreds of millions into new.....read more
Posted in Medicine on 2013-10-14 03:13
Endothelial Cells Can Repair and Regenerate Organs,.....read more
Posted in Science on 01.01.2010
Spacex says China is their main competitor for commercial.....read more
Posted in Science on 01.01.2010
Staring at Your Phone Could Be Making You Short Sighted..read more
Posted in Science on 01.01.2010
Oculus Rift virtual reality headset coming to mobile, but.....read more
Posted in Science on 01.01.2010
China is working towards a manned lunar mission in about.....read more
Posted in Science on 01.01.2010
Delivering drugs via nanoparticles to target mitochondria..read more

Recent Blog Posts

  • Posted by AlexMuller
    Nanoparticle vaccine shows potential as immunotherapy to fight.....read more
    Posted by AlexMuller
    Obesity is top cause of preventable life-years lost, study shows..read more
    Posted by AlexMuller
    Light can be utilized to control gene function..read more
    Posted by AlexMuller
    Brain stimulation restores memory during lapses, research shows..read more
    Posted by AlexMuller
    Wax worm caterpillar will eat plastic shopping bags: New.....read more

Login to your Account

Login to your PlanetTech Account here

Username:
Password:
Remember me
or

Create a New Account

You just need username and password

The following errors occured:
Username:
Email:
Password:
Verify password:
Remember me