An inquiry is underway to determine if temperature sensors at the Paris airport were altered to influence online betting outcomes, shedding light on the rise of climate-related wagers. Several accounts on Polymarket, an online betting platform, reaped substantial winnings when temperatures spiked by 5 degrees Celsius in a single day this month. This incident has sparked discussions about the ethics of platforms like Polymarket and Kalshi, where users can bet on climate-related events such as the intensity of hurricanes or the likelihood of 2026 being the hottest year on record.
Experts suggest that weather betting could have a positive impact on climate science and may even sway some climate change skeptics. Moran Cerf, a neuroscience and business professor at Columbia University, conducted a study where participants bet on climate events like the California wildfires. The research revealed that engaging in prediction markets increased awareness and concern about climate change, potentially influencing even those who were initially skeptical.
Despite the increasing frequency of climate-related disasters, skepticism about climate change persists. A survey by the Angus Reid Institute in January 2025 found that nearly a quarter of Canadians doubt that human activities are the primary cause of climate change. Prediction markets offer a unique way to bridge the gap between scientific projections and public understanding of climate impacts.
Prediction markets operate differently from traditional gambling setups, with users trading shares based on the likelihood of specific outcomes. Climate scientist Mark Roulston is spearheading an academic project that involves research teams participating in prediction markets to refine climate models and enhance scientific understanding. These markets also hold potential for insurance companies to assess risks more accurately and for scientists to secure research funding.
While short-term binary options are prohibited in Canada, Wealthsimple has received approval to offer certain types of prediction markets, including contracts related to economic indicators and climate trends. However, concerns persist about the effectiveness of short-term bets in fostering a deeper understanding of climate change. Additionally, instances of data manipulation, like the situation in Paris, raise questions about the reliability of these platforms in promoting climate awareness.