The document discusses the critical state of the Earth in 2019, with rising temperatures, sea levels, and extinction risks. It argues that sustainability is not possible without transformative change, and that protecting and restoring biodiversity through measures like halting forest destruction, protecting half of lands/oceans, and restoring degraded ecosystems is key to maintaining a livable climate. Specifically, restoring water cycles through practices like wetland protection is important as carbon follows the water and biodiversity is needed to support healthy water and carbon cycles. The document calls for a shift to prioritizing nature in decision-making to transition to a net carbon sink status through these transformative conservation and restoration measures.