| 1 | The models, though, disagree widely in the magnitude of the warming we can expect. | |
| 2 | Despite the cold weather, you'll still heat up and lose fluids through sweat. | |
| 3 | Aerosols can warm the stratosphere and cool the air below by absorbing energy from the Sun. | |
| 4 | Ward says long ago volcanic activity spewed carbon dioxide into the air and warmed the oceans. | |
| 5 | "Why should we go another 20 years without knowing whether we're on high [warming] curve or the low curve? |