Alejandra Borunda Alejandra Borunda (she/her) is a reporter on NPR's Climate Desk.
Stories By

Alejandra Borunda

Alejandra Borunda

Climate & Health Reporter

Alejandra Borunda (she/her) is a reporter on NPR's Climate Desk, where she covers the intersection of climate change and health. She reports on how climate change is affecting people's bodies and minds—and how people can, and are, protecting themselves and others.

Before Borunda joined NPR in 2023, she wrote about climate science and environmental issues for National Geographic, where she reported on glacier retreat in Greenland, shade and heat inequity in Los Angeles, climate change's impact on ice fishing in the Great Lakes, and much more.

She has a PhD in Earth and Environmental Sciences from Columbia University, where she studied how tiny dust particles in the atmosphere affected climate change thousands of years ago.

She can be reached via encrypted message at alejandra.02 on Signal.

Story Archive

Wednesday

Study finds workplace injuries increase significantly in the heat

Transcript
  • Download
  • <iframe src="https://www.npr.org/player/embed/nx-s1-5563889/nx-s1-9483384" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Kaffeklubben Island, or Coffee Club Island, is an uninhabited island lying off the northern shore of Greenland. It contains the northernmost undisputed point of land on Earth. Martin Nissen/Wikimedia Commons hide caption

toggle caption
Martin Nissen/Wikimedia Commons

Friday

People take pictures at a vista point with the San Francisco skyline obscured by smoke from wildfires during a spate of smoke during 2020, one of the worst wildfire smoke years on record. Eric Risberg/AP hide caption

toggle caption
Eric Risberg/AP

Wildfire smoke contributes to the deaths of thousands in the U.S., study says

Transcript
  • Download
  • <iframe src="https://www.npr.org/player/embed/nx-s1-5544451/nx-s1-9468293" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Wednesday

Demand for sugary beverages goes up when it's hot out. Here, delivering soda on a hot July day in New York City in 2016. Spencer Platt/Getty Images hide caption

toggle caption
Spencer Platt/Getty Images

You're more likely to reach for soda when it's hot outside

Transcript
  • Download
  • <iframe src="https://www.npr.org/player/embed/nx-s1-5529399/nx-s1-9451444" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Thursday

Floodwaters from Hurricane Katrina fill the streets near downtown New Orleans in August 2005. The storm caused enormous damage, displaced thousands of people and inspired a new era of hurricane science. David J. Phillip/AP hide caption

toggle caption
David J. Phillip/AP

Hurricane science has come leaps and bounds since Katrina. The progress is now at risk

Transcript
  • Download
  • <iframe src="https://www.npr.org/player/embed/nx-s1-5490429/nx-s1-9421848" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Wednesday

A hurricane's effects on victims' health last for years after the storm, study finds

Transcript
  • Download
  • <iframe src="https://www.npr.org/player/embed/nx-s1-5485777/nx-s1-9420193" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Wednesday

When wildfires make the air smoky, here's how to protect your health

Transcript
  • Download
  • <iframe src="https://www.npr.org/player/embed/nx-s1-5493344/nx-s1-9400418" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Tuesday

Getty Images

A new study explores whose health is most affected by heat waves

Transcript
  • Download
  • <iframe src="https://www.npr.org/player/embed/nx-s1-5485575/nx-s1-9397803" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Monday

People play rugby in the hazy weather on July 27 in New York City. There are currently smoke advisories across the Midwest and Northeast as a result of wildfires in Canada.
Liao Pan/China News Service/VCG via Getty Images hide caption

toggle caption
Liao Pan/China News Service/VCG via Getty Images

Thursday

Living around polluted air increases the risk of developing dementia, study says

Transcript
  • Download
  • <iframe src="https://www.npr.org/player/embed/nx-s1-5479096/nx-s1-9393607" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Wednesday

Heat poses an extra risk for millions of Americans who take medications for issues ranging from high blood pressure to antidepressants. David Goldman/AP hide caption

toggle caption
David Goldman/AP

Why certain medications can increase your risk in the heat

Transcript
  • Download
  • <iframe src="https://www.npr.org/player/embed/nx-s1-5479098/nx-s1-9391034" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Thursday

NOAA nominee discusses extreme weather amidst agency cutbacks

Transcript
  • Download
  • <iframe src="https://www.npr.org/player/embed/nx-s1-5462745/nx-s1-5522193-1" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Saturday

Heat and wildfire smoke affect birth outcomes, according to a new study

Transcript
  • Download
  • <iframe src="https://www.npr.org/player/embed/nx-s1-5455842/nx-s1-5515860-1" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Monday

Heat makes it harder to sleep. In Baghdad, some neighbors set up mattresses on their roof to find a cool sleeping spot. A new study finds the risk of sleep apnea goes up along with temperatures. Chris Hondros/Getty Images hide caption

toggle caption
Chris Hondros/Getty Images

Climate change is boosting the risk of sleep apnea

Transcript
  • Download
  • <iframe src="https://www.npr.org/player/embed/nx-s1-5438087/nx-s1-5503102-1" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Sunday

Encore: making DIY air filters

Transcript
  • Download
  • <iframe src="https://www.npr.org/player/embed/nx-s1-5257523-e1/nx-s1-5485972-1" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Thursday

Some industrial facilities like oil refineries and chemical plants emit toxic air pollution. Congress has voted to roll back rules that tightly limited that pollution. Cavan Images/Getty Images/Cavan Images RF hide caption

toggle caption
Cavan Images/Getty Images/Cavan Images RF

EPA air pollution rollback

Transcript
  • Download
  • <iframe src="https://www.npr.org/player/embed/nx-s1-5405619/nx-s1-5470074-1" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Tuesday

Saturday

In Texas, an early heat wave raises concerns for summer

Transcript
  • Download
  • <iframe src="https://www.npr.org/player/embed/nx-s1-5399613/nx-s1-5461016-1" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Friday

Cuts to the federal government may impact nation's weather forecasts

Transcript
  • Download
  • <iframe src="https://www.npr.org/player/embed/nx-s1-5387725/nx-s1-5457087-1" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Friday

The Environmental Protection Agency's science wing, the Office of Research and Development, faces major changes under the Trump administration. The office does research to understand how environmental contaminants affect human health. Its work feeds into regulations like the Clean Air Act. Mark Schiefelbein/AP hide caption

toggle caption
Mark Schiefelbein/AP

Wednesday

A layer of smog lingers above downtown Los Angeles in 2024. Millions of Americans are still breathing in unhealthy air, despite long-term progress toward cleaning up many sources of pollution, according to the 2025 State of the Air report. ETIENNE LAURENT/AFP via Getty Images hide caption

toggle caption
ETIENNE LAURENT/AFP via Getty Images

What's the state of air pollution in the U.S.?

Transcript
  • Download
  • <iframe src="https://www.npr.org/player/embed/nx-s1-5368131/nx-s1-5453698-1" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Friday

NOAA satellites captured an image of 2022's Hurricane Ian. Data from those satellites and other NOAA efforts feeds into hurricane forecasts, as well as efforts to understand weather, climate, and fisheries changes. A proposed budget for the agency would slash more than 25% of its funding. Handout/Getty Images/Getty Images North America hide caption

toggle caption
Handout/Getty Images/Getty Images North America

Wednesday

Hundreds of demonstrators gathered outside the headquarters of the National Oceanic and Atmospheric Administration in March to protest Department of Government Efficiency (DOGE) cuts to the agency. The Trump administration continues to make major staffing and programming changes at the agency. Chip Somodevilla/Getty Images hide caption

toggle caption
Chip Somodevilla/Getty Images