Report: Amazon Fires Drive Unprecedented Global Forest Loss in 2024

A firefighter sets the forest ablaze as part of a controlled plan to prevent wildfires in the Cerrado region, at a national park in Brasilia, Brazil, Tuesday, May 20, 2025. (AP Photo/Eraldo Peres)
A firefighter sets the forest ablaze as part of a controlled plan to prevent wildfires in the Cerrado region, at a national park in Brasilia, Brazil, Tuesday, May 20, 2025. (AP Photo/Eraldo Peres)
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Report: Amazon Fires Drive Unprecedented Global Forest Loss in 2024

A firefighter sets the forest ablaze as part of a controlled plan to prevent wildfires in the Cerrado region, at a national park in Brasilia, Brazil, Tuesday, May 20, 2025. (AP Photo/Eraldo Peres)
A firefighter sets the forest ablaze as part of a controlled plan to prevent wildfires in the Cerrado region, at a national park in Brasilia, Brazil, Tuesday, May 20, 2025. (AP Photo/Eraldo Peres)

Massive fires fueled by climate change led global forest loss to smash records in 2024, according to a report issued on Wednesday.

Loss of tropical pristine forests alone reached 6.7 million hectares (16.6 million acres), an 80% spike compared to 2023 and an area roughly the size of Panama, mainly because Brazil, the host of the next global climate summit in November, struggled to contain fires in the Amazon amid the worst drought ever recorded in the rainforest. A myriad of other countries, including Bolivia and Canada, were also ravaged by wildfires.

It was the first time the annual report, issued by the World Resources Institute and the University of Maryland, showed fires as the leading cause of tropical forest loss, a grim milestone for a naturally humid ecosystem that is not supposed to burn, Reuters reported.

"The signals in these data are particularly frightening," said Matthew Hansen, the co-director of a lab at the University of Maryland that compiled and analyzed the data. "The fear is that the climate signal is going to overtake our ability to respond effectively."

Latin America was hit particularly hard, the report said, with the Amazon biome hitting its highest level of primary forest loss since 2016.

Brazil, which holds the largest share of the world's tropical forests, lost 2.8 million hectares (6.9 million acres), the most of any country. It was a reversal of the progress made in 2023 when President Luiz Inacio Lula da Silva took office promising to protect the world's largest rainforest.

“This was unprecedented, which means we have to adapt all our policy to a new reality,” said Andre Lima, who oversees deforestation control policies for Brazil’s Ministry of Environment, adding that fire, which was never among the leading causes of forest loss, is now a top priority for the government.

Bolivia overtook the Democratic Republic of Congo as the second country with the most tropical forest loss despite having less than half the amount of forest as the African nation, which also saw a spike in forest loss last year.

Bolivia's forest loss surged by 200% in 2024, with a drought, wildfires and a government-incentivized agricultural expansion as the leading causes. Across Latin America, the report noted similar trends in Mexico, Peru, Nicaragua, and Guatemala.

Conflicts in Colombia and the Democratic Republic of Congo also boosted deforestation rates, as armed groups used up natural resources.

Outside the tropics, boreal forests, which evolved with seasonal fires, also posted record-high tree loss in 2024, with Canada and Russia each losing 5.2 million hectares (12.8 million acres) in 2024 as wildfires got out of control.

Southeast Asia bucked the global trend with Malaysia, Laos, and Indonesia all posting double-digit decreases in primary forest loss, as domestic conservation policy, combined with efforts by communities and the private sector, continued to effectively contain fires and agricultural expansion.

Another outlier was the Charagua Iyambae Indigenous territory in southern Bolivia, which was able to keep the country's record fires at bay through land-use policies and early warning systems.

Rod Taylor, the global director for forests at the WRI, said that as leaders descend on the Amazonian city of Belem for the next climate summit, he would like to see countries make progress in introducing better funding mechanisms for conservation.

"At the moment," he said, "there's more money to be paid by chopping forests down than keeping them standing."



Nearby Sculptor Galaxy Revealed in Ultra-Detailed Galactic Image

This undated handout image released by European Southern Observatory on June 17, 2025 shows a detailed, thousand-color image of the Sculptor Galaxy captured with the MUSE instrument at ESO’s Very Large Telescope (VLT). (Handout / European Southern Observatory / AFP)
This undated handout image released by European Southern Observatory on June 17, 2025 shows a detailed, thousand-color image of the Sculptor Galaxy captured with the MUSE instrument at ESO’s Very Large Telescope (VLT). (Handout / European Southern Observatory / AFP)
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Nearby Sculptor Galaxy Revealed in Ultra-Detailed Galactic Image

This undated handout image released by European Southern Observatory on June 17, 2025 shows a detailed, thousand-color image of the Sculptor Galaxy captured with the MUSE instrument at ESO’s Very Large Telescope (VLT). (Handout / European Southern Observatory / AFP)
This undated handout image released by European Southern Observatory on June 17, 2025 shows a detailed, thousand-color image of the Sculptor Galaxy captured with the MUSE instrument at ESO’s Very Large Telescope (VLT). (Handout / European Southern Observatory / AFP)

The Sculptor galaxy is similar in many respects to our Milky Way. It is about the same size and mass, with a similar spiral structure. But while it is impossible to get a full view of the Milky Way from the vantage point of Earth because we are inside the galaxy, Sculptor is perfectly positioned for a good look.

Astronomers have done just that, releasing an ultra-detailed image of the Sculptor galaxy on Wednesday obtained with 50 hours of observations using one of the world's biggest telescopes, the European Southern Observatory's Chile-based Very Large Telescope.

The image shows Sculptor, also called NGC 253, in around 4,000 different colors, each corresponding to a specific wavelength in the optical spectrum.

Because various galactic components emit light differently across the spectrum, the observations are providing information at unprecedented detail on the inner workings of an entire galaxy, from star formation to the motion of interstellar gas on large scales. Conventional images in astronomy offer only a handful of colors, providing less information.

The researchers used the telescope's Multi Unit Spectroscopic Explorer, or MUSE, instrument.

"NGC 253 is close enough that we can observe it in remarkable detail with MUSE, yet far enough that we can still see the entire galaxy in a single field of view," said astronomer Enrico Congiu, a fellow at the European Southern Observatory in Santiago, and lead author of research being published in the journal Astronomy & Astrophysics.

"In the Milky Way, we can achieve extremely high resolution, but we lack a global view since we're inside it. For more distant galaxies, we can get a global view, but not the fine detail. That's why NGC 253 is such a perfect target: it acts as a bridge between the ultra-detailed studies of the Milky Way and the large-scale studies of more distant galaxies. It gives us a rare opportunity to connect the small-scale physics with the big-picture view," Congiu said.

Sculptor is about 11 million light-years from Earth, making it one of the closest big galaxies to the Milky Way. A light-year is the distance light travels in a year, 5.9 trillion miles (9.5 trillion km).

Like the Milky Way, it is a barred spiral galaxy, meaning it has an elongated structure extending from its nucleus, with spiral arms extending from the ends of the bar. Its diameter of about 88,000 light-years is similar to the Milky Way's, as is its total mass. One major difference is Sculptor's rate of new star formation, estimated to be two to three times greater than that of the Milky Way.

Nearly 30% of this star formation is happening near the galaxy's nucleus in what is called a starburst region, as revealed in colorful emissions shown in the new image.

The observations have given information on a wide range of properties such as the motion, age and chemical composition of stars and the movement of interstellar gas, an important component of any galaxy.

"Since the light from stars is typically bluer if the stars are young or redder if the stars are old, having thousands of colors lets us learn a lot about what stars and populations of stars exist in the galaxy," said astronomer Kathryn Kreckel of Heidelberg University in Germany, a study co-author.

"Similarly for the gas, it glows in specific bright emission lines at very specific colors, and tells us about the different elements that exist in the gas, and what is causing it to glow," Kreckel said.

The initial research being published from the observations involves planetary nebulae, which are luminous clouds of gas and dust expelled by certain dying stars. Despite their name, they have nothing to do with planets. These nebulae can help astronomers measure the precise distances of faraway galaxies.

The researchers marveled at the scientific and aesthetic value of the new view of Sculptor.

"I personally find these images amazing," Congiu said. "What amazes me the most is that every time I look at them, I notice something new - another nebula, a splash of unexpected color or some subtle structure that hints at the incredible physics behind it all."