Weed is taking people to new highs thanks to global warming.

The High Times – Pot grown outdoors in California could become much more potent as climate change and drought continue to wreak havoc on the state’s fragile ecosystems.

According to a new study from The Daily Climate, rising temperatures and CO2 levels will likely boost the medicinal and psychoactive properties of plants, including cannabis.

“If you go back to the times plants evolved on land, the average CO2 (carbon dioxide) levels were 1,000 parts per million; today it’s about 400,” Lewis Ziska, a plant physiologist with the U.S. Department of Agriculture’s Agricultural Research Service who led the research, said.

This is significant because only 4 percent of plant species have adapted to these’s lower CO2 levels. The rest—including cannabis—still feel deprived.

Read more: The High Times