Spacecraft
|
|
2.9 |
|
|
Floods
|
|
2.6 |
|
|
Ice Storms
|
|
2.9 |
|
|
Recycling
|
|
2.8 |
|
|
Rockets
|
|
2.9 |
|
|
Rovers
|
|
2.9 |
|
|
Wildfires
|
|
2.9 |
|
|
Artificial Satellites
|
|
2.9 |
|
|
Green Buildings
|
|
2.9 |
|
|
Space Stations
|
|
2.9 |
|
|
Solar Power
|
|
2.9 |
|
|
Wind Power
|
|
2.8 |
|
|
Hybrid and Electric Cars
|
|
2.8 |
|
|
Ecuador
|
|
3.0 |
|
|
Ronald Reagan
|
|
3.5 |
|
|
Canada
|
|
2.9 |
|
|
Peru
|
|
3.1 |
|
|
Cottonmouth
|
|
4.1 |
|
|
Honduras
|
|
3.1 |
|
|
Jamaica
|
|
3.1 |
|
|
Roseate Spoonbill
|
|
4.0 |
|
|
John Quincy Adams
|
|
4.0 |
|
|
American Alligator
|
|
4.1 |
|
|
Poland
|
|
2.9 |
|
|
