Van der Ploeg's studies the potential impact of climate change on the economy. To meet proposed carbon emissions reductions, and prevent temperature increases beyond 2 degrees, up to one-third of global oil reserves, half of gas reserves and 80 percent of coal reserves will have to remain unburned, making them stranded assets.[5][6] This will affect oil, gas, and coal companies, and "carbon-intensive industries such as steel, aluminum, cement, plastics, and greenhouse horticulture".[6] Van der Ploeg emphasizes the need for investors to be aware of climate-related financial risk and take them into account for long-term planning.[5][6]