- "It says here that by 2075, the Earth's oceans will be too warm to sustain most coral reefs, and once they're gone, the entire ecosystem of the planet will collapse."
- —Malcolm Barrett, when reading a newspaper.
Global warming is an event in which the average temperature of a planet increases to a point where a planet's ecosystem will collapse. Due to the extent on burning fossil fuels on Earth, the planet is experiencing the events of global warming. (SG1: "Smoke and Mirrors")
Dr. Parrish was studying the effects of severe ozone depletion on plant life on P3M-736 and how important it was, to which Major Evan Lorne compared global warming with a Wraith attack. (SGA: "Runner")
M44-5YN, a planet in the Pegasus galaxy is experiencing the effects of naturally occurring global warming, which a team lead by Dr. Nichols investigated, until one of the planet's glaciers breached, causing severe flooding on the valley which was the location of the planet's Stargate. (SGA: "The Shrine")