| ECOTOUR | Vacation inspired by Earth Day, perhaps |
| LEONIDS | Meteor shower peaking annually around November 17-18, caused by Earth crossing the path of a dust trail left behind by the comet Tempel-Tuttle (7) |
| LEONID | A meteor of a swarm peaking in November caused by Earth crossing the path of a dust trail left behind by comet Tempel-Tuttle (6) |
| WATER | This "vapor" is the most potent of the greenhouse gases in Earth's atmosphere, whose concentration is set by Earth's air temperatures. |
| SEE | "___ the Light" by Earth, Wind & Fire |
| SESAME | Tropical plant's a mess when crushed by earth (6) |
| TAHOE | Nevada resort upset by earth mover (5) |
| PROTEGE | A protected species, shrub is cut back by earth mother |
| GROUNDHOG | Woodchuck in corner, covered by earth |
| SUBSIDENCE | Denies cubs have been damaged by earth movement |
| RIDGE | High pressure shown by earth the plough turns up (5) |
| GROOVE | "Let's ___" (top-ten hit by Earth, Wind & Fire) |
| AFTER | "___ the Love Has Gone" (1979 classic by Earth, Wind & Fire) |
| COMET | The Tsuchinshan-atlas ___ made a close pass by Earth (5) |
| SOLARYEAR | Time taken by earth to orbit sun (5,4) |
| OPENING | Supposing one's knocked out by Earth's opportunity? (7) |
| MOONLIT | Illuminated by Earth's satellite (7) |
| SITE | It's affected by Earth's position (4) |
| CORIOLISEFFECT | Deflection and acceleration caused by earth's rotation (8,6) |
| GAMBIA | Part of Africa that sees doctor embraced by earth mother (6) |
