California heat waves lead to deaths, financial losses

Recent heat waves in California have resulted in hundreds of deaths and billions in economic losses over the past decade, a new report by the state insurance department reveals.

Levi Sumagaysay reports for CalMatters.


In short:

  • Seven heat events from 2013 to 2022 killed nearly 460 people and caused $7.7 billion in economic damage.
  • Effects include lost wages, productivity declines, agricultural disruptions, and infrastructure damage.
  • Low-income communities and minority groups face the highest heat-related death rates.

Key quote:

“It’s really important to understand that heat is a silent killer.”

— Michael Mendez, assistant professor of environmental planning and policy at UC Irvine

Why this matters:

Rising temperatures are more than just a summer inconvenience. They’re a serious threat to public health and the economy. Vulnerable populations, such as the elderly, children, and those with pre-existing health conditions, face the greatest risks. Hospitals and emergency services are stretched thin during extreme heat events, dealing with a surge in heat-related illnesses.

An aerial view of a lake stretching between dry bluffs in a desert landscape

Lake Powell shrinks and marinas must adapt

Overuse, drought, and climate change have pummeled Lake Powell to near historic lows, made worse by the driest winter on record and extreme heat.

Aerial panoramic landscape view of Sahel and oasis at Dogondoutchi, Niger
Credit: HomoCosmicos/BigStock Photo ID: 259021687

After decades of drought, water is rising in the African Sahel

Warming has brought extreme rainfall to the parched Sahel, which is seeing aquifers refill as monsoons grow stronger. But heavier downpours alone cannot explain the groundwater revival, say hydrologists, who believe efforts to harvest rain, along with tree-planting projects, may be paying dividends.
Nuclear power cooling towers

Nuclear energy revival puts Westinghouse in prime position

The company, which filed for bankruptcy protection in 2017, stands to benefit from growing support for nuclear power and President Trump’s deal with Saudi Arabia.
Solar panels with wind turbines and high voltage powerlines overhead
Credit: jaroslavav/BigStock Photo ID: 109519274

Texas’ grid operator prepares for more demand than ever this week

Amid triple-digit temperatures, solar and storage have created far more breathing room than in the last stretch of record energy demand.
Solar panels installed on a city balcony, generating solar energy.

Balcony solar is sweeping the US, but who’s actually selling it?

As consumer interest surges and state legislators get on board, a few businesses have jumped into the domestic market.
Electrical transmission lines silhouetted against setting sun

Texas transmission policy sharpens US competition fight

Electric utilities in other states are asking federal regulators to allow monopoly control over projects, while some critics want Texas to have more.

Drone aerial view of new Microsoft data centers.
Credit: Mauvries/BigStock Photo ID: 465964923

Environmental groups contest Texas data centers’ air pollution

Three environmental groups sent two San Antonio data centers a notice of intent to sue for failing to secure permits as major air polluters.
From our Newsroom
Multiple Houston-area oil and gas facilities that have violated pollution laws are seeking permit renewals

Multiple Houston-area oil and gas facilities that have violated pollution laws are seeking permit renewals

One facility has emitted cancer-causing chemicals into waterways at levels up to 520% higher than legal limits.

Regulators are underestimating health impacts from air pollution: Study

Regulators are underestimating health impacts from air pollution: Study

"The reality is, we are not exposed to one chemical at a time.”

Pennsylvania governor Josh Shapiro speaks with the state flag and American flag behind him.

Two years into his term, has Gov. Shapiro kept his promises to regulate Pennsylvania’s fracking industry?

A new report assesses the administration’s progress and makes new recommendations

silhouette of people holding hands by a lake at sunset

An open letter from EPA staff to the American public

“We cannot stand by and allow this to happen. We need to hold this administration accountable.”

wildfire retardants being sprayed by plane

New evidence links heavy metal pollution with wildfire retardants

“The chemical black box” that blankets wildfire-impacted areas is increasingly under scrutiny.

Stay informed: sign up for The Daily Climate newsletter
Top news on climate impacts, solutions, politics, drivers. Delivered to your inbox week days.