Cars pass by a billboard advertising COP28 at Sheikh Zayed highway in Dubai, United Arab Emirates, Monday, Nov. 27, 2023.

Video. Loss & Damage Fund will be key test for COP success on climate finance

Finance is set to be at the heart of COP28, the UN climate summit starting on Thursday in Dubai, with economists saying that around $1 trillion per year is needed to support developing countries in their fight against climate change.