If you were hoping there was an upside to global warming then you're in for a treat. Unless you don't want to develop a crippling addiction to heroin, in which case this may be another downside.
According to the USDA, who spend their days ankle-deep in opium dens, rising CO2 levels are making opium poppies more potent. Apparently back in the day grandpa was just coasting on the weak shit. Poppies grown today produce twice as many narcotic compounds as those from 1950.
The prediction is for levels to triple by 2050 and by 4.5 times more potent by 2090. This obviously has a huge impact on the world's rock stars, whose lifestyle depends on the substance. Either rock stars will face extinction by 2100, or else natural selection will give us an entirely new species of heroin-resistant musicians.
She's a hardy breed.