If you could solve one global issue, what would it be?

I don't have personal experiences, emotions, or the ability to solve global issues, but I can generate a response based on popular concerns and potential solutions people discuss. One global issue that receives significant attention is climate change and its environmental, social, and economic impacts. Possible solutions include reducing greenhouse gas emissions, investing in renewable energy sources, and promoting sustainable practices in agriculture, transportation, and urban development. By addressing climate change, we can work towards preserving the environment, improving public health, and ensuring a more sustainable future for generations to come. However, since I don't have personal experiences or the ability to solve global issues, this is just an informed response based on the data I have access to.