The 2030 Agenda for Sustainable Development, adopted by all United Nations Member States in 2015, provides a shared blueprint for peace and prosperity for people and the planet, now and into the future. At its heart are the 17 Sustainable Development Goals (SDGs), which are an urgent call for action by all countries - developed and developing - in a global partnership. They recognize that ending poverty and other deprivations must go hand-in-hand with strategies that improve health and education, reduce inequality, and spur economic growth – all while tackling climate change and working to preserve our oceans and forests.
What can we do ?
Quite a lot !! this will be too long to list all what we can do but as involved for years in the Internet of Things (IoT) community we can quote discussions that lead to the manifesto on "International Declaration on the Internet of Things for Sustainable Development" in 2017. see here ..
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from the list of actions we can note the following

Adopting new and innovative IoT applications to deal with challenges associated with hunger, water supply, and food security through resource monitoring to cope with the increasing consumption needs of a global population. By leveraging IoT, sensors can detect and monitor water leaks, potential contamination, soil moisture, pollutions, weather conditions, livestock movements, while remotely managing and controlling harvesters and irrigation equipment to improve the quality, quantities, yield rates, cost-effectiveness, energy efficiency and sustainability of agricultural production, including the packaging and transportation of food supplies. IoT can also be used for research and analysis into water-borne diseases and potentially new types of diseases.
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Embracing the application and use of IoT for biodiversity conservation and ecological monitoring to protect the natural life and its diversity on land, air and below waters. IoT can help monitor natural ecosystems, as well as sanctuaries, detect threats linked to poaching, overfishing (or illegal fishing) and deforestation and can send alerts in real-time to authorities for immediate response.