Key moments
Recent studies reveal that human-caused climate change has dramatically increased the risk of extreme weather events, with a notable example being the European heatwave of 2003, which resulted in approximately 70,000 fatalities. This alarming statistic underscores the urgent need for action as climate-related disasters become more frequent and severe.
According to research, 74% of extreme weather events analyzed were found to be exacerbated by climate change. The Carbon Brief’s comprehensive mapping of 600 studies indicates that 85% of extreme weather occurrences were influenced by human activities. This data highlights the critical intersection of climate change and public health, as seen in recent outbreaks of diseases linked to extreme weather.
In 2025, the Earth’s energy imbalance reached unprecedented levels, with global near-surface temperatures averaging 1.43 ± 0.13 °C above the pre-industrial average from 1850 to 1900. This temperature rise correlates with the highest recorded ocean heat content since 1960, indicating a troubling trend for marine ecosystems and global weather patterns.
The annual average Arctic sea-ice extent for 2025 was reported as the lowest or second lowest since 1979, further emphasizing the rapid changes occurring in our climate. These developments are not merely statistical; they have real-world implications, as evidenced by the recent dengue outbreak in Peru.
In 2023, Peru experienced a significant dengue outbreak, with over 22,000 reported infections and 381 related deaths by July. Notably, 60% of these cases were linked to extreme rainfall caused by Cyclone Yaku, illustrating how climate change can directly impact public health and safety.
Celeste Saulo, a prominent climate scientist, stated, “Human activities are increasingly disrupting the natural equilibrium and we will live with these consequences for hundreds and thousands of years.” This sentiment is echoed by UN Secretary-General António Guterres, who warned, “Climate chaos is accelerating and delay is deadly.” These statements reflect a growing consensus among experts regarding the urgent need for global action to mitigate climate change.
Prof Erin Mordecai noted, “This is the first time scientists have been able to pinpoint the role of climate change and precisely measure the impact of a particular storm on dengue.” This breakthrough in understanding the relationship between climate change and disease outbreaks highlights the necessity for continued research and proactive measures to address these challenges.
As the world grapples with the escalating effects of climate change, the data underscores the importance of immediate and sustained action to combat this crisis. The implications for health, safety, and the environment are profound, necessitating a collective response to avert further catastrophic outcomes.
