BRUSSELS (Reuters) - The European Union should set a 2030 target to cut greenhouse gas emissions by 55%, from 1990 levels, to give industry the certainty needed to invest in clean technologies, Latvian Prime Minister Krisjanis Karins said on Thursday. “If we set a very clear and a high target of 55%, it effectively gives certainty to industry that there will be a guaranteed market for solutions and services and products,” Karins told reporters on arrival for an EU summit in Brussels. Such investments could include clean transport and renewable energy, he said.