A new study by MIT researchers suggests that ozone depletion caused by pre-CFC industrial solvents like carbon tetrachloride could have been detected decades earlier using modern scientific tools. While natural variability makes detection difficult, historical data indicates that carbon tetrachloride levels in 1950 were significantly higher than initial CFC concentrations, implying earlier human-induced damage.
Background
The Montreal Protocol successfully phased out CFCs after their ozone-depleting effects were identified in the 1970s and confirmed by the Antarctic ozone hole discovery in 1985. This study re-evaluates historical atmospheric data to assess whether earlier intervention was scientifically feasible.
- Source
- Ars Technica
- Published
- Jun 30, 2026 at 03:00 AM
- Score
- 6.0 / 10