The issue of whether human activities cause global climate change is a controversial topic. which limitation to climate research could most likely be overcome through scientific design?
conditions that create climate are extremely complex.
data from a wide range of time periods must be analyzed.
conducting experiments on a global scale is extremely expensive.
altering climates has ethical considerations because of the potential for harm.

The issue of whether human activities cause global climate change is indeed a controversial topic. The limitation to climate research that could be overcome through scientific design is "Data from a wide range of time periods must be analyzed." Very powerful, or Super Computers, are required to analyze large amounts of data. The sooner more powerful computers are developed, the sooner data from the wide range of time periods can be analyzed. This will give scientists a better idea of the extent of global warming, if any, and how to prevent it.