What is the climate threat?
Scientists have known for several decades that greenhouse gases such as CO2 and methane emitted by human activity (industry, transportation, home heating and electricity generation etc.) accumulate in the atmosphere and increase the greenhouse effect, which raises the average global temperature. As a result, arctic ice has been melting at alarming rates, sea levels are rising, and our oceans are acidifying. With over 400 parts per million of CO2 in the atmosphere, Earth’s average temperature has already increased by about 1 degree Celsius (3.6 Fahrenheit) since the industrial age began. Scientists and politicians agree that 2 degrees Celsius is the absolute limit, but globally greenhouse gas emissions continue to rise. This raises the probability of runaway feedback loops that would produce an irreversible shift to a new, hotter global climate, resulting in devastation of coastal cities and agricultural havoc. The scientific evidence is overwhelming.
Resources about climate change
Climate Change. Evidence and Causes. From the National Academy of Sciences.
- NASA website
- IPCC report
- TED Talk by James Balog about melting ice
- Rolling Stone article by Bill McKibben about oil reserves
- 45-minute free documentary Disruption inviting to participate in the People’s Climate March in September 2014
- First episode of Years of Living Dangerously. (All nine episodes are on Netflix and Amazon Prime’s instant watch!)
- United Nations Environment Program’ Introduction to CC
- #Blacklivesmatter: Read this article about the connections between racism and climate change