Significant concepts: pcv valve, source of pollution, flashcards and bookmarks, heart disease, daily dose of air, particulate matter, emission control system, human health, world health, carbon monoxide, high level, can also log, premature death, water pollution, environmental education.

Most relevant domains

Most relevant domains based on cumulative page relevance to the topic as defined by example links and on the number of relevant domains linking to them.

domain	rank	page count	visit count	link count	relevance	popularity
http://ca.gov/	1	386	453	2683	0.93	2.17	ca.gov
http://thefreedictionary.com/	2	405	410	5981	1	1.43	thefreedictionary.com
http://theguardian.com/	3	266	355	940	0.96	2.45	theguardian.com
http://freethesaurus.com/	4	226	243	690	0.99	2.25	freethesaurus.com
http://epa.gov/	5	175	250	2740	0.93	3.51	epa.gov
http://europa.eu/	6	275	393	2806	0.9	2.25	europa.eu
http://environmental-expert.com/	7	360	380	6334	0.87	1.22	environmental-expert.com
http://chinadaily.com.cn/	8	224	259	1412	0.94	1.84	chinadaily.com.cn
http://downtoearth.org.in/	9	253	274	752	0.8	1.8	downtoearth.org.in
http://numbeo.com/	10	303	313	1700	0.95	1.12	numbeo.com

Atext

Most frequent phrases in anchor texts of links found in this topical graph .

atext	count	semantic flow ™
news	1741	60.11
printer friendly	570	41.09
air pollution	576	35.2
crossref	764	32.78
continue reading	1032	31.88
health	766	30.9
pdf	920	30.41
read more	476	25.82
climate change	614	25.12
air quality	445	24.14

Keyword ideas

Common word stems found in on-topic page titles.

word
air
pollut
qualiti
environment
news
environ
china
clean
health
delhi

Popular pages

On-topic pages with highest topical PageRank.

title / url
Cart - Smart Air India https://smartairfilters.com/in/en/cart/	smartairfilters.com
Indoor Air Quality - A human right https://www.slideshare.net/Camfil_Farr/indoor-air-quality-a-human-right	www.slideshare.net
Daqing - China's smog problem - Pictures - CBS News https://www.cbsnews.com/pictures/chinas-smog-problem/	www.cbsnews.com
Londoners' immune systems 'weakened by capital's toxic air' | London Evening Standard https://www.standard.co.uk/news/london/londoners-immune-systems-weakened-by-capitals-toxic	www.standard.co.uk
Clean Air Make More Take Action http://cleanairmakemore.com/make-the-commitment/take-action/	cleanairmakemore.com
N95 Pollution Mask w/o Valve 5 Pack - Smart Air India https://smartairfilters.com/in/en/product/n95-pollution-mask/	smartairfilters.com
Environment Pollution (Prevention and Control) Authority | Scroll.in https://scroll.in/tag/Environment%20Pollution%20(Prevention%20and%20Control)%20Authority	scroll.in
The UK government's attitude to air pollution stinks | New Scientist https://www.newscientist.com/article/mg23431243-300-the-uk-governments-attitude-to-air-pol	www.newscientist.com
Government's bid to delay publishing toxic air plan is blocked by High Court | London Evening Standard https://www.standard.co.uk/news/uk/governments-bid-to-delay-publishing-toxic-air-plan-is-b	www.standard.co.uk
Fine-particle pollution linked to wider number of cancers, premature births - The Washington Post https://www.washingtonpost.com/news/to-your-health/wp/2016/04/29/fine-particle-pollution-l	www.washingtonpost.com

Popular prospect pages

On-topic pages with highest topical PageRank having a few outgoing links and domains.

title / url	PR	relevance	links	rel links	external links	external domains	referring domains	external backlinks
My TEDx Talk: Yes, You Can Live Healthy in China | MyHealth Beijing http://www.myhealthbeijing.com/prevention/my-tedx-talk-yes-you-can-live-healthy-in-china/	0.45	1	59	22	7	7	0	0	www.myhealthbeijing.com
Cirrus Clouds http://enviropedia.org.uk/Weather/Cirrus_Clouds.php	0.41	1	351	117	6	6	0	0	enviropedia.org.uk
Automatic Urban and Rural Network (AURN) - Defra, UK https://uk-air.defra.gov.uk/networks/network-info?view=aurn	0.4	0.78	38	13	5	4	0	0	uk-air.defra.gov.uk
Clean Air in London u2013 Campaigning to achieve urgently and sustainably compliance with World Health Organisation guidelines for air quality https://cleanair.london/	0.4	1	155	43	32	22	3	3	cleanair.london
Tornadoes http://enviropedia.org.uk/Weather/Tornadoes.php	0.39	1	351	121	6	6	0	0	enviropedia.org.uk
Monsoons http://enviropedia.org.uk/Climate/Monsoons.php	0.39	1	351	117	6	6	0	0	enviropedia.org.uk
Nuclear Power http://enviropedia.org.uk/Sustainability/Nuclear_Power.php	0.39	1	353	119	6	6	0	0	enviropedia.org.uk
Temperature http://enviropedia.org.uk/Atmosphere/Temperature.php	0.39	1	351	123	6	6	0	0	enviropedia.org.uk
Play-In For Climate Action Brings Moms, Kids To DC < MCAF http://www.momscleanairforce.org/play-in-photos/	0.38	1	92	33	6	6	0	0	www.momscleanairforce.org
Brexit: What will be the impact on air pollution? - Unearthed https://unearthed.greenpeace.org/2016/06/21/how-brexit-could-cause-extra-deaths-from-air-p	0.36	1	33	14	7	6	0	0	unearthed.greenpeace.org

Hubs

Pages with most links towards other likely on-topic pages.

url	count	PR	score	semantic flow ™	relevance	on topic	links	rel links	external links	external domains	referring domains	external backlinks
http://www.momscleanairforce.org/press/	750	0.15	0.96	22.07	0.99	yes	1777	774	748	500	0	0	www.momscleanairforce.org
https://ideas.repec.org/j/Q53.html	718	0.15	0.99	17.75	0.98	yes	2145	864	0	0	0	0	ideas.repec.org
http://www.thefreedictionary.com/air-pump	440	0.15	1	22.68	1	yes	1285	600	5	1	0	0	www.thefreedictionary.com
https://uk-air.defra.gov.uk/library/reports?section_id=13	324	0.15	0.99	13.59	0.86	yes	622	355	7	3	0	0	uk-air.defra.gov.uk
https://en.wikipedia.org/wiki/Pollution	286	0.15	0.97	14.67	1	yes	861	286	43	29	0	0	en.wikipedia.org
https://www.thefreelibrary.com/Indoor+air+quality-s17711	259	0.18	0.99	16.81	1	yes	685	263	0	0	0	0	www.thefreelibrary.com
http://www.thefreedictionary.com/air+force	212	0.15	0.99	14	1	yes	552	220	14	2	0	0	www.thefreedictionary.com
https://en.wiktionary.org/wiki/air	195	0.16	0.95	13.51	1	yes	1033	204	21	4	0	0	en.wiktionary.org
http://airqualityaction.org/news.php?newsid=216	118	0.29	0.88	12.74	1	yes	221	122	2	2	0	0	airqualityaction.org
https://smartairfilters.com/in/en/cart/	33	2.12	1	25.23	1	yes	62	22	0	0	0	0	smartairfilters.com

Domains with most linking domains

Relevant domains with most other relevant domains linking to them.

domain	count	semantic flow ™
http://epa.gov/	296	92.03	epa.gov
http://nih.gov/	127	39.37	nih.gov
http://nytimes.com/	116	23.03	nytimes.com
http://theguardian.com/	115	20.2	theguardian.com
http://youtube.com/	100	12.17	youtube.com
http://who.int/	93	11.45	who.int
http://reuters.com/	81	15.39	reuters.com
http://ca.gov/	81	13.42	ca.gov
http://facebook.com/	74	5.37	facebook.com
http://doi.org/	71	77.04	doi.org