I think it was 40 years ago. Only then it was Global Winter.
several solutions to warming.
1. Move to northern Canada and greenland and start farms.
2. Remember nuclear winter. Detonate 5 or 6 nukes and bock the suns rays for months.
3. Build more desal plants. Water desert areas and turns them into agriculture belts, drink and use down the rising sea levels.
4. Every person on earth give the united nations a $1,000 a year and they will stop the warming.