Alejandra Borunda
Stories
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Health
Worried about air quality safety in L.A.? Here's what to know
There's confusion over how safe air quality is in L.A. as fires continue to burn, spewing wildfire smoke and toxins. We look at air quality readings, what's real and what's not and what people can do.
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Health
Can't find an air filter amid the California fires? Here's how to build your own
Air quality in Southern California is dangerously bad because of the fires. Our reporter set out to build an air filter -- in a style the EPA praised, using only things she already had at home.
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Environment
Weird weather isn't always because of climate change — but sometimes it is
Sometimes, weather is just weather. And other times human-caused climate change had an obvious impact.
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Environment
2024 was the hottest year on record. The reason remains a science mystery
The official numbers are in: 2024 is the hottest year on record. Climate change is the main culprit. But there might be something else going on, too.
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Health
Toxic smoke from the L.A. fires is blanketing the region
Wildfires raging around Los Angeles mean air quality has plummeted. What's the risk for everyone breathing that air -- and how can people protect themselves?
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Environment
Young people are dying of heat and their risks could grow, study finds
Scientists have pointed out that extreme heat is particularly dangerous for older people. A new study shows that young, healthy people are also dying too often in extreme weather.
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Environment
With talks teetering, climate negotiators struck a controversial $300 billion deal
Representatives of developing countries and climate activists were furious over the outcome, saying $300 billion annually from industrialized countries is far short of what vulnerable nations need to better protect themselves from climate change.
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Environment
Climate change plays a role in global rise of dengue fever
Over 12 million cases of dengue fever were reported in 2024, the most ever. A study suggests climate change has likely played a significant role in the disease's expansion.
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Environment
Countries agreed to try to hold global warming to 1.5 degrees Celsius. Is that still possible?
In the 2015 Paris Agreement, most countries agreed to try hard to limit global warming to below 1.5 degrees Celsius. Delay and inaction mean that goal is becoming harder to achieve by the day.
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Health
LA is seeing cases of dengue, the range of which may be growing due to climate change
Los Angeles County has reported eight cases of locally acquired dengue fever in the past few months; the first ever occurred last year. Climate change probably played a role.
