
The ocean is humanity's greatest carbon capture machine — absorbing a quarter of all CO₂ emissions without charge. But warming and acidification are degrading this trillion-dollar service.
If we had to pay for the CO₂ the ocean absorbs at current carbon market prices, the bill would be $3.3 trillion per year. It's the most undervalued ecosystem service on Earth — and America's coastal ecosystems play a central role.
US salt marshes, mangroves, and seagrass meadows store 50x more carbon per acre than tropical rainforests. These coastal ecosystems — threatened by development and warming — are America's hidden climate superweapon.
As oceans warm, they become less able to absorb CO₂. Acidification simultaneously degrades the marine life that drives biological carbon uptake — a dangerous feedback loop that accelerates warming.
Protecting and restoring coastal blue carbon ecosystems is among the most cost-effective climate investments available. The US can lead with blue carbon markets, coastal restoration funding, and ocean protection policy. Read the Full Economics →
Data from federal agencies shows this issue directly affects millions of Americans. Understanding the scope is the first step toward meaningful action and lasting solutions.
Across the United States, communities are experiencing the real-world consequences. Local economies, public health, and ecosystems are all interconnected—solutions must address all three.
Leading scientists from NOAA, NASA, EPA, and universities nationwide are documenting alarming trends. The evidence is clear: urgent action is needed to protect America's future.
Climate change, industrial activity, policy gaps, and resource mismanagement combine to accelerate this crisis. Addressing root causes—not just symptoms—is essential for lasting change.
Success stories from across America show that informed policy, community action, and scientific innovation can reverse damage and restore resilience. The path forward exists.