Twenty-five years ago, Mexican engineer Gustavo Rodriguez decided to collect rainwater to solve the scarcity of water in his home and contribute to the care of natural resources.

While populations have seen and undergone changes since the beginning of time, one trend in particular is unfolding across the world: less children, older people. In an effort to tackle the complex issue in Asia, government officials are convening to help create a sustainable society where no one is left behind.