Based on your description of the artwork—a globe sitting on oil with oil on top—it seems that the artist is most likely communicating a concern about the impact of oil usage on the environment. The imagery suggests a critical look at how oil and its exploitation can affect the planet, possibly highlighting issues such as pollution, resource depletion, and environmental degradation. The globe symbolizes the world, while the oil emphasizes the pervasive and detrimental influence of fossil fuels on global ecosystems.
While other interpretations related to the lack of sunlight, the use of technology in art, or water discoloration could be relevant in different contexts, the primary message seems to center around environmental concerns regarding oil and its impact on the Earth.