How Climate Change Threatens Our Food and Water

The world's climate is changing at an unprecedented rate, with far-reaching consequences for our food and water supply. Rising temperatures are altering the delicate balance of ecosystems, while pollution and renewable energy are reshaping the way we live and work.

What's Happening to Our Food Supply

Fish are getting smaller and dying at higher rates as they adapt to warming waters, researchers warn. This evolutionary change will reduce global fish yields by one-fifth under current warming predictions, and up to 30 percent in high-emissions scenarios. The consequences will be felt by the billions of people who rely on seafood for protein.

• 42% of the world's population depends on seafood as a primary source of protein.
• 30% of global fish yields could be lost in high-emissions scenarios.
• 1.5°C above pre-industrial levels is the threshold beyond which coral reefs and other marine ecosystems will collapse.

The Secret Superpower of Brazil's Cerrado

The cerrado, a vast savanna in Brazil, is storing far more carbon than anyone realized – six times more, per hectare, than the Amazon's biomass. But like Brazil's famous rainforest, the cerrado is in serious trouble, due to climate change and the encroachment of agribusiness. Protecting these peaty ecosystems would be a major win not just for preserving biodiversity but for keeping planet-warming gases out of the sky.

> "When you degrade it — one hectare of Amazon and one hectare of wetland in the cerrado — we are losing six times more carbon," said ecologist Larissa Verona.

Renewable Energy Brings a Windfall for Rural Communities

In rural West Texas, renewable energy is transforming the lives of seniors. The Crockett County Senior Center is one of many organizations benefiting from the windfall. "They feed us what we need," said Cynthia Flores, a 75-year-old resident, "but I always fix it up."

Key Facts

• Who: Cynthia Flores, Crockett County Senior Center resident
• What: Renewable energy brings economic benefits to rural communities
• When: 2023
• Where: West Texas, USA
• Impact: Improved livelihoods for seniors and local economies

What Experts Say

Hydropower, once the country's leading source of renewable energy, is still significant, though, with 5.6% of U.S. electricity generation. However, federal energy data shows that U.S. hydropower output has been nearly flat while other sources are growing.

California Takes Action on Water Pollution

California dairies are out of balance, with excess nitrogen from milk cow manure posing a health threat. The State Water Board will soon release a new rule to limit water pollution from dairies in the state. A first draft of the board's thinking came in October 2024, requiring Central Valley dairies to comply with a nitrate drinking water standard of 10 milligrams per liter.

What Comes Next

As the world grapples with the challenges of climate change, it's clear that our food and water supply will be impacted. From warming waters to renewable energy, the consequences will be far-reaching. What's certain is that we must take action to protect our ecosystems and ensure a sustainable future.

Background

Climate change is a pressing global issue, with rising temperatures, pollution, and renewable energy transforming the way we live and work. The consequences will be felt by communities around the world, from rural West Texas to Brazil's cerrado.

Key Numbers

• 1.5°C: The threshold beyond which coral reefs and other marine ecosystems will collapse.
• 30%: The potential loss of global fish yields in high-emissions scenarios.
• 42%: The percentage of the world's population that depends on seafood as a primary source of protein.
• 5.6%: The percentage of U.S. electricity generation from hydropower.