Politicians getting involved so now the 'acktivayshun'!
"Our models have gotten better, we have a better understanding of the physics and the chemistry and the biology, and so they're able to simulate and project future temperature changes and precipitation changes much better than they were," said Dr Stephen Cornelius from WWF, an observer at IPCC meetings.
"Another change has been that attribution sciences have increased vastly in the last few years. We can make greater links between climate change and extreme weather events."
As well as updates on temperature projections, there will likely be a strong focus on the question of humanity's role in creating the climate crisis.