The tech industry has long tried to align with the green movement, though its leaders are often accused of spouting nebulous slogans and making hard-to-test pledges. The Mobile World Congress, an industry get-together in Barcelona, certainly saw some sloganeering. But Huawei, Orange and industry body GSMA attempted to flesh out some of the green claims made about 5G. The next-generation mobile network is being rolled out across the globe, with promises of super-fast internet going hand-in-hand with claims of massive benefits for the environment. Laurence Williams of Sussex university in the UK…