The Paris Agreement, a decade old, faces a critical juncture as the world grapples with rising temperatures and extreme weather events. While progress has been made in certain areas, such as the expansion of clean energy, the pace of global action lags behind the urgent need to address climate change.
A Tale of Two Speeds: Progress and Peril
Since the Paris Agreement was signed in 2015, Earth's temperature has risen by approximately 0.46°C, making the past decade the hottest on record. Despite this, scientists and experts warn that governments are not acting swiftly enough to reduce their reliance on fossil fuels. Johan Rockstrom, director of the Potsdam Institute for Climate Research, emphasizes the growing gap between action and the impacts of climate change, with temperatures continuing to rise and extreme weather intensifying.
"We must be honest and acknowledge our failure," Rockstrom asserts, highlighting the faster and more severe climate harms than initially anticipated. However, not all voices are as pessimistic. Christiana Figueres, the former UN climate chief, believes that the momentum generated by the agreement has exceeded expectations. She emphasizes the direction and speed at which the world is moving towards a more sustainable future, albeit with the recognition that the worsening weather conditions are outpacing emission reduction efforts.
The Impact of Extreme Weather
Each year since the Paris Agreement, the world has experienced hotter temperatures than in 2015. Deadly heat waves have struck various regions, including India, the Middle East, the Pacific Northwest, and Siberia. Wildfires have ravaged lands in Hawaii, California, Europe, and Australia, while severe floods have devastated Pakistan, China, and the American South. Researchers attribute many of these disasters to the signs of human-driven warming.
The consequences are evident: more than 7 trillion tons of ice have melted from glaciers and the Greenland and Antarctic ice sheets since 2015. Sea levels have risen by 40 millimeters over the decade. Research published in the medical journal The Lancet warns of global economic losses tied to extreme weather, reaching approximately $304 billion last year.
A Global Perspective on Emissions
Global greenhouse gas emissions reached a record high of 53.2 gigatons last year. Notably, two-thirds of these emissions originated from China, the United States, the European Union, India, Russia, Indonesia, Brazil, and Japan. Only the European Union and Japan managed to reduce their annual totals.
The Rise of Renewable Energy
Amidst the challenges, the past decade has witnessed progress in renewable energy. Renewables now account for 40% of global electricity supply, surpassing coal in the first half of the year. Wind and solar energy have met all new demand. According to UN assessments, solar energy is now 41% cheaper than fossil fuels, while onshore wind is 53% more affordable. Clean-energy investment surpassed $2 trillion in 2024, twice the amount spent on fossil fuels. Electric vehicle sales have increased significantly, climbing from approximately 1% of global car sales in 2015 to nearly a quarter.
Todd Stern, a former US special climate envoy, believes that the transition to clean energy is unstoppable. "You cannot hold back the tides," he says. However, fossil fuels still dominate global energy supply, accounting for approximately 80% of the total, the same share as in 2015.
A Narrow Path to Success
Scientists suggest that without the Paris Agreement, the world might have been on track for approximately 4°C of warming by 2100. Existing national plans, if fully implemented, point to a warming of roughly 2.3°C to 2.5°C. Current pledges would reduce emissions by about 10% between 2019 and 2035. According to the Intergovernmental Panel on Climate Change (IPCC), emissions need to fall by 60% by 2035 to keep the 1.5°C limit within reach.
At COP29 in Baku last year, developed countries pledged $300 billion annually by 2035, falling short of the needs expressed by developing nations. Joanna Depledge, a climate negotiations historian at the University of Cambridge, acknowledges the mixed performance of the Paris Agreement. "It's a situation where you can't definitively say it has failed, but nor can you claim it has succeeded dramatically," she concludes.
The journey towards a sustainable future is complex and multifaceted, requiring continued efforts and collaboration on a global scale.
