Clean air is a basic human need, but it is threatened by increasing levels of pollution. Global population and GDP growth, as well as urbanization, are increasing demand for energy, which is still largely generated from fossil fuels. However, innovation is increasingly providing solutions. The transition to more efficient energy sources is helped by technological progress and ¬lower-cost solar and wind energy, as well as batteries and other applications. Read about this topic and other one-page reports within our long-term investment series, which features 30 thematic investment ideas based on long-term structural developments.