WORSENING CONDITIONS
Atmospheric CO2
CO₂ Levels Surpass 430 ppm
In May 2025, atmospheric concentrations of carbon dioxide exceeded 430 ppm—a sobering threshold not seen in millions of years. According to data from Scripps Oceanography, global monthly averages climbed to 430.2 ppm, while NOAA’s measurements reached 430.5 ppm, reflecting a substantial rise of roughly 3.5–3.6 ppm compared to the previous year. Scientists underline that this escalation is driven by continued fossil fuel combustion and deforestation, marking a critical tipping point in Earth’s climate system.
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Rising Temperatures
Record-Breaking Global Temperatures
May 2025 ranked as the second-warmest May on record, with global temperatures averaging 1.4 °C above pre-industrial levels—only marginally cooler than the previous record. The Copernicus Climate Change Service emphasizes that at least 21 of the past 22 months have exceeded the 1.5 °C threshold, a hallmark of the climate emergency. This extensive warming underscores growing trends of extreme weather and escalating ocean heatwaves, raising alarms across the climate science community.
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Rising Seas
Sea Level Rise Threatens NYC
Relative sea levels in New York City have risen approximately 12 inches since 1900, driven by both global sea rise and land subsidence. Under current greenhouse gas trajectories, projections warn of a further 14–19 inch (1.2–1.6 ft) rise by the 2050s, escalating to 30–50 inches (2.5–4.2 ft) by 2100. These changes will increase the frequency and severity of tidal flooding, especially during storm surges, highlighting a pressing need for resilient coastal infrastructure.
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