Research question
"What are the report's main findings on observed warming, current impacts, and near-term risk?"
A useful summary preserves the report's confidence and scope instead of flattening it into generic bullet points.
Observed warming
The report attributes recent warming principally to human greenhouse gas emissions and records global surface temperature at 1.1°C above the 1850-1900 average in 2011-2020.
IPCC Synthesis Report, PDF p. 20Impacts are already widespread
Rapid changes have occurred across the atmosphere, ocean, cryosphere, and biosphere, with adverse impacts and losses affecting nature and people.
IPCC Synthesis Report, PDF p. 21Near-term risk rises with each increment
Continued emissions increase warming, while every increment of warming intensifies multiple concurrent hazards. Deep, sustained emissions cuts can slow warming within about two decades.
IPCC Synthesis Report, PDF p. 28