- the sun? No, it's not getting brighter
- the orbit? No, it's not changing
- volcanoes? No, they have a temporary cooling effect
- natural variability? No, noise can't explain a century-long trend
- cosmic rays? Are you serious
- aliens? No
- us? Yes. Believe us, we checked.
- the sun? No, it's not getting brighter
- the orbit? No, it's not changing
- volcanoes? No, they have a temporary cooling effect
- natural variability? No, noise can't explain a century-long trend
- cosmic rays? Are you serious
- aliens? No
- us? Yes. Believe us, we checked.