CLEAN : WMO chief says human activities main cause

The video discusses the ongoing climate change, highlighting that 2013 was the 6th warmest year on record. It emphasizes the role of human activities in global warming, particularly through greenhouse gas emissions, which have reached record levels. The urgency of taking action to reduce emissions is stressed to avoid surpassing global temperature targets. The video also explores the multifaceted impacts of climate change, including extreme weather events, sea level rise, and effects on food security and health.

What are some of the greenhouse gases mentioned in the text, and why are they significant?

Explain the relationship between climate change and food security as mentioned in the text.