| problems with drilling for oil | 1.76 | 0.1 | 9932 | 30 | 28 |
| oil well drilling problems | 0.05 | 0.3 | 8069 | 26 | 49 |
| alaska oil drilling problems | 1.6 | 0.3 | 8668 | 28 | 19 |
| negative effects of drilling for oil | 1.17 | 0.5 | 7365 | 36 | 34 |
| is drilling for oil bad | 1.07 | 0.2 | 983 | 23 | 8 |
| cons of drilling for oil | 0.04 | 0.3 | 373 | 24 | 31 |
| effects of oil drilling | 1.7 | 0.3 | 9463 | 23 | 68 |
| negative impacts of oil drilling | 1.59 | 0.2 | 5744 | 32 | 39 |
| health concerns of oil drilling workers | 0.1 | 1 | 5087 | 39 | 57 |
| why aren't oil companies drilling for oil | 0.9 | 0.1 | 1445 | 41 | 50 |
| does drilling for oil harm the environment | 1.22 | 0.6 | 1532 | 42 | 86 |
| is oil drilling bad for the environment | 0.87 | 0.5 | 4007 | 39 | 62 |
| oil drilling is dangerous for the environment | 0.18 | 0.1 | 746 | 45 | 41 |
| environmental impacts of drilling for oil | 1.85 | 0.9 | 4137 | 41 | 54 |
| environmental effects of oil drilling | 0.85 | 1 | 3985 | 37 | 79 |
| health effects of oil and gas drilling | 1.23 | 0.1 | 3360 | 38 | 10 |
| oil drilling effects on environment | 1.8 | 0.4 | 3741 | 35 | 72 |
| why aren't oil companies drilling | 0.06 | 1 | 9686 | 33 | 4 |
| does oil drilling cause pollution | 0.33 | 0.6 | 9415 | 33 | 33 |
