Rising atmospheric CO2 and the distribution of potentially toxic elements in ecosystems (Astrobiology Magazine)
![Experimental arrays at sunset measuring carbon dioxide](https://ecoss.nau.edu/wp-content/uploads/2015/05/atmosphere-145.png)
Sunrise over the subtropical oak woodland, elevated CO2 experiment at the Kennedy Space Center, Florida. The experiment used open-top chambers to increase CO2 concentrations, with paired chambers with no extra CO2 serving as controls. The experiment ran from 1996-2007. Photo credit: Bert Drake.