| 1 | It also avoids the release of the pollutants sulphur dioxide and nitrogen dioxide. | |
| 2 | Wines were often dosed with sulphur dioxide to control any infection. | |
| 3 | Instead of lava, ash, and sulfur dioxide, these volcanoes spew mud and methane. | |
| 4 | They are mostly sulfur dioxide and nitrogen dioxide from power plants, auto exhausts and industry. | |
| 5 | Scientists could use airplanes to inject sulfur dioxide directly into the stratosphere and bring down global temperatures. |