World leaders must increase their commitments to conserving land and water, and quickly, if a stable climate and high quality of life are to be preserved in the near future, a new scientific study argues.

Countries should double their protected zones to 30 percent of the Earth’s land area, and add 20 percent more as climate stabilization areas, for a total of 50 percent of all land kept in a natural state, scientists conclude. All of this needs to be done by 2030 to have a real hope of keeping climate change under the “danger zone” target of 2.7 degrees Fahrenheit (1.5 degrees Celsius) and to prevent the world’s ecosystems from unravelling—according to an ambitious plan called the Global Deal