Summary (Max 280 characters)How can sustainable development be achieved for all while addressing global climate change? Click "Solutions" to submit ideas or comment and vote on ideas from other people.
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Overview

Some 252 million years ago, global warming due to increased atmospheric CO2 that led to ocean current changes, increases in hydrogen sulfate (H2S), and ozone depletion killed 97% of life during the Permian extinction. This could happen again unless we learn how to turn around the growing greenhouse gas emissions and reduce the volume already in the atmosphere today. According to NASA, 16 of the 17 warmest years on record occurred since 2001.

The Paris Agreement on Climate Change, with 197 Parties to the Convention, that went into force in November 2016 calls for efforts to cap temperature increases to 1.5°C (2.7°F) above pre-industrial levels. Even though the growth in CO2 emissions has slowed over the past three years due to efficiencies and a move away from coal by the U.S. and China, the accumulative effect continues warming Earth. The US Administration withdrawal from the agreement, may increase efforts of other nations to achieve the new goals.

According to NASA the global temperature has already increased by 0.94°C (1.7°F) since 1880 and sea levels have risen 8–9 inches during the same period. If current trends continue, the 2017 US Climate Report projects an increase of 2.8–4.8°C (5–7.5°F) increase by 2100. Sea levels are rising at 3.4 millimeters per year and ocean acidity is projected to increase 100–150% over pre-industrial levels by the end of this century.

Turning around GHG growth will require unprecedented global efforts since today’s 7.5 billion world population is expected to grow by another 2 billion by 2050 and the global economy is expected to triple during this same period.

Although the CO2 equivalent of 450 ppm is the politically acceptable cap, some argue it should be 350 ppm since we already see massive impacts today with 410 ppm, so why would 450 be sustainable? We have to reduce not only GHG emissions but also the volume of GHGs already in the atmosphere today. The Paris Convention on Climate Change and country pledges should be enforceable through boycotts, sanctions, and other means. Global citizens should understand that Earth does not possess infinite resources; that the Earth is a Closed-Loop System that should be applied to various economic, political, and environmental management systems; that consumption and waste management will have to change; and that environmental sustainability is a top economic, social value, and political priority.

World leaders have agreed to achieve 17 UN Sustainable Development Goals with 169 sub-goals by 2030.

REF: millennium-project.org