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NASA Data Shows Toxic Air Threat Choking Indian Subcontinent

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Re: NASA Data Shows Toxic Air Threat Choking Indian Subcontinent

#81
Traveled to India ~2+ years ago. Landed in Delhi - couldn't make out the city at all from the air due to pollution. We drove to Agra (3 hr drive) and there was smog pretty much the entire way there.

This seems like a promising opportunity for startups to tackle...I wonder if there are any out there, would love to hear more.

Re: NASA Data Shows Toxic Air Threat Choking Indian Subcontinent

#82
post #68

Earlier quoted context omitted.

Air pollution is killed with known measures, and it goes away as soon as these are enforced. Climate change? We have literally changed the climate for the entirety of humanity's future unless we devise a system, whose energy requirements would overshadow practically anything we have ever invented and whose workings we still don't understand, and even so its impact would take decades, at the very least, to be felt.

I read once about an idea: to stimulate the growth of algae in the oceans by seeding them with iron. It would lead to an algae bloom which will die and settle on the ocean floor, trapping the carbon. Yep, found it: https://en.wikipedia.org/wiki/Iron_fertilization

Yes, ideas that have been widely suggested as being extremely bad by adding even more uncertainty to already chaotic systems that are becoming destabilized.

If history is any indication, fertilizer runoff from rivers causes anoxic events in the ocean. That is shit is not to be fucked with; you can trivially destabilize an ecosystem and destroy it, as has already happened in many places.

Re: NASA Data Shows Toxic Air Threat Choking Indian Subcontinent

#84
As someone who grew up in New Delhi, I think the government has taken quite a few steps like passing laws that require all public transport to run only on CNG, mandating industries to be positioned outside the city and more recently having policies to curb number of cars on the road. But the problem of pollution never seemed to improve. Optimistically I've told myself that if those measures weren't taken we would have been in a worse position much earlier. Though that does little good in the long run. Unless action is taken to effect negative growth to pollution I think anything you do won't quite cut it.

To be fair though, like in any Indian metropolitan, there is immense pressure on the infrastructure that takes solving such problems to the next level. The sheer growth in population(primarily due to immigrants from other parts of India) on a daily basis would put any government in a quandary.

Re: NASA Data Shows Toxic Air Threat Choking Indian Subcontinent

#85
post #79
post #60

A related story : There's a mega mall in Chandigarh, India that wasn't given approval for a power connection for quite some time (politics / corruption). Real estate is super expensive & the owners couldn't afford to sit idle and play games with the government so they decided to run the mall from morning till night on diesel generators. That's ~ $4500 of diesel each day, probably 6-8k litres. This is an example of a…

Why would anyone protest? India doesn't have enough electricity to waste on Malls and Movies theaters. Or big offices like tech parks in Bangalore! What you have mentioned applies to every tech park in Bangalore, so should people now protest against their very source of employment?

I think you are missing the point. The protest should be against polluting the city to power a non-necessary activity by not going to the mall.

AND if the government purposely delayed an electricity connection by months or years, then you should protest against them too. The above problem doesn't seem to be an issue of supply & demand of electricity, but more of a power tussle between the builder & authorities for possible kickbacks.

Related, it seems like India is almost power surplus according to these sources : [1] [2] [3]

[1] http://www.businesstoday.in/magazine/features/we-can-tell-th...

[2] "By the end of calendar year 2015, India has become power surplus country despite lower power tariffs" - https://en.wikipedia.org/wiki/Electricity_sector_in_India

[3] https://www.google.com/search?q=india+power+surplus

Re: NASA Data Shows Toxic Air Threat Choking Indian Subcontinent

#86
post #46

Earlier quoted context omitted.

I look at as as Climate change being caused by air pollution (of CO2 & certain other gasses). The old fashioned air pollution is more localized, but isn't completely localized - acid rain was/is a regional air pollution issue for example. Some of the particulates generated on the other side of the world certainly do travel here on air currents, not in high amounts, but if they carry potent pollution items, it may hav…

A better way to phrase the parent's comment, which doesn't deliberately obscure the point: "Dare we suggest that particulates are more important than CO2?"

The question poses a false dichotomy. We should regulate both as appropriate, with understanding of the science of how the pollution affects us. Doing so doesn't make one more important than the other.

Re: NASA Data Shows Toxic Air Threat Choking Indian Subcontinent

#87

That satellite image of the haze is scary. Scarier still is how the deterioration of air quality in the cities is affecting health. (The WHO estimates ~15 million bronchial asthma patients in India.) You haven't experienced air pollution if you haven't breathed in the evening air in Mumbai or Bangalore during the rush hour.

Thank god for the US EPA.

Re: NASA Data Shows Toxic Air Threat Choking Indian Subcontinent

#88
post #21

Earlier quoted context omitted.

Don't think so, India is typically 4 stroke because of pollution norms and 4 strokes are more fuel efficient which we're very sensitive to. Frankly, India's problem can only be fixed by population control. If Sanjay Gandhi hadn't been an idiot and forever poisoned the idea of population control, India would be much better off, especially if we can get the population to around 300M - 500M

There are still a lot of older two-stroke engines in use. Four-stroke engines from local and Chinese manufacturers are typically crude air-cooled carbureted designs with very high emissions. A modern European motorcycle might produce 20x lower emissions than a typical Indian bike thanks to much stricter regulations.

It's easy to believe there's a lot of room for improvement- we've been improving the design of four-stroke engines for decades- but at least they are a huge step-function better than two-stroke.

Re: NASA Data Shows Toxic Air Threat Choking Indian Subcontinent

#90
post #83

How much worse is the air pollution in New Delhi compared to a relatively polluted US city such as Los Angeles?

You can compare the maps for e.g. PM2.5 in New Delhi and LA quite easily:

http://aqicn.org/map/delhi/mandir-marg/#@g/28.6188/77.2405/1...

http://aqicn.org/map/losangeles/los-angeles-north-main-stree...

Quite a lot worse, as you can see!

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