Scientists are warning that solar geoengineering, if not properly regulated, could have negative consequences on the climate. Some studies suggest that geoengineering could be a relatively inexpensive and potentially safe way to artificially cool the earth's climate, but others warn that it may have unintended effects, such as increasing the risk of malaria or causing crop failures. The use of geoengineering to address climate change is a complex issue with potential risks and benefits that are still being researched and debated.