Air pollution
Topic overview. Based on 32273 on-topic pages. [air-pollution directory]
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  | | | | | | | |
|---|---|---|---|---|---|---|---|
http://ca.gov/  | 1 | 558 | 627 | 3490 | 0.95 | 2.57 | ca.gov |
| http://who.int/ | 2 | 583 | 605 | 3203 | 0.88 | 2.36 | who.int |
| http://wikipedia.org/ | 3 | 590 | 1014 | 25900 | 0.89 | 2.43 | wikipedia.org |
| http://epa.gov/ | 4 | 166 | 176 | 5311 | 0.95 | 3.97 | epa.gov |
| http://timetocleartheair.com/ | 5 | 405 | 405 | 1828 | 1 | 1.12 | timetocleartheair.com |
| http://indiaenvironmentportal.org.in/ | 6 | 362 | 366 | 2035 | 0.96 | 1.3 | indiaenvironmentportal.org.in |
| http://edf.org/ | 7 | 256 | 261 | 1072 | 0.97 | 1.79 | edf.org |
| http://sylvane.com/ | 8 | 362 | 362 | 1182 | 0.97 | 1.2 | sylvane.com |
| http://helpsavenature.com/ | 9 | 152 | 152 | 178 | 0.98 | 2.62 | helpsavenature.com |
| http://theguardian.com/ | 10 | 247 | 343 | 2043 | 0.91 | 2.3 | theguardian.com |
Atext
Most frequent phrases in anchor texts of links found in this topical graph .
Keyword ideas
Common word stems found in on-topic page titles.
| word | |
|---|---|
| air | |
| pollut | |
| qualiti | |
| health | |
| gas | |
| climat | |
| environment | |
| environ | |
| clean | |
| emiss |
Popular pages
On-topic pages with highest topical PageRank.
Popular prospect pages
On-topic pages with highest topical PageRank having a few outgoing links and domains.
Hubs
Pages with most links towards other likely on-topic pages.
Domains with most linking domains
Relevant domains with most other relevant domains linking to them.
| domain | | | |
|---|---|---|---|
| http://epa.gov/ | 313 | 188.08 | epa.gov |
| http://nih.gov/ | 162 | 328.53 | nih.gov |
| http://doi.org/ | 121 | 589.9 | doi.org |
| http://wikipedia.org/ | 120 | 82.05 | wikipedia.org |
| http://ca.gov/ | 113 | 24.66 | ca.gov |
| http://nytimes.com/ | 110 | 28.95 | nytimes.com |
| http://youtube.com/ | 107 | 11.58 | youtube.com |
| http://nasa.gov/ | 103 | 22 | nasa.gov |
| http://noaa.gov/ | 94 | 16.93 | noaa.gov |
| http://who.int/ | 90 | 17.4 | who.int |