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World's First Wooden Satellite Launched Into Space

LignoSat, a satellite made from wood and developed by scientists at Kyoto University and Sumitomo Forestry, shown during a press conference in May, 2024. STR / JIJI PRESS/AFP/File
LignoSat, a satellite made from wood and developed by scientists at Kyoto University and Sumitomo Forestry, shown during a press conference in May, 2024. STR / JIJI PRESS/AFP/File
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World's First Wooden Satellite Launched Into Space

LignoSat, a satellite made from wood and developed by scientists at Kyoto University and Sumitomo Forestry, shown during a press conference in May, 2024. STR / JIJI PRESS/AFP/File
LignoSat, a satellite made from wood and developed by scientists at Kyoto University and Sumitomo Forestry, shown during a press conference in May, 2024. STR / JIJI PRESS/AFP/File

The world's first wooden satellite has blasted off on a SpaceX rocket, its Japanese developers said Tuesday, part of a resupply mission to the International Space Station.
Scientists at Kyoto University expect the wooden material to burn up when the device re-enters the atmosphere -- potentially providing a way to avoid generating metal particles when a retired satellite returns to Earth, AFP reported.
These particles may negatively impact both the environment and telecommunications, the developers say.
Each side of the box-like experimental satellite, named LignoSat, measures just 10 centimeters (four inches).
It was launched on an unmanned rocket from NASA's Kennedy Space Center in Florida, Kyoto University's Human Spaceology Center said.
The satellite, installed in a special container prepared by the Japan Aerospace Exploration Agency, "flew into space safely", it said in a post on X.
A spokeswoman for LignoSat's co-developer Sumitomo Forestry told AFP the launch had been "successful".
It "will arrive at the ISS soon, and will be released to outer space about a month later" to test its strength and durability, she said.
Data will be sent from the satellite to researchers who can check for signs of strain and determine if the satellite can withstand extreme changes in temperature.
"Satellites that are not made of metal should become mainstream," Takao Doi, an astronaut and special professor at Kyoto University, said at a press conference earlier this year.

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Air Pollution from Fires Linked to 1.5 Million Deaths a Year

The study was released a week after Ecuador declared a national emergency due to forest fires. Galo Paguay / AFP/File
The study was released a week after Ecuador declared a national emergency due to forest fires. Galo Paguay / AFP/File
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Air Pollution from Fires Linked to 1.5 Million Deaths a Year

The study was released a week after Ecuador declared a national emergency due to forest fires. Galo Paguay / AFP/File
The study was released a week after Ecuador declared a national emergency due to forest fires. Galo Paguay / AFP/File

Air pollution caused by fires is linked to more than 1.5 million deaths a year worldwide, the vast majority occurring in developing countries, a major new study said on Thursday.
This death toll is expected to rise in the coming years as climate change makes wildfires more frequent and intense, according to the study in The Lancet journal.
The international team of researchers looked at existing data on "landscape fires", which include both wildfires that rage through nature and planned fires such as controlled burns on farming land.
Around 450,000 deaths a year from heart disease were linked to fire-related air pollution between 2000 and 2019, the researchers said.
A further 220,000 deaths from respiratory disease were attributed to the smoke and particulates spewed into the air by fire, AFP said.
From all causes around the world, a total of 1.53 million annual deaths were associated with air pollution from landscape fires, according to the study.
More than 90 percent of these deaths were in low and middle-income countries, it added, with nearly 40 percent in sub-Saharan Africa alone.
The countries with the highest death tolls were China, the Democratic Republic of Congo, India, Indonesia, and Nigeria.
A record amount of illegal burning of farm fields in northern India has been partly blamed for noxious smog that has recently been choking the capital New Delhi.
The authors of the Lancet study called for "urgent action" to address the huge death toll from landscape fires.
The disparity between rich and poor nations further highlights "climate injustice", in which those who have contributed the least to global warming suffer from it the most, they added.
Some of the ways people can avoid smoke from fires -- such as moving away from the area, using air purifiers and masks, or staying indoors -- are not available to people in poorer countries, the researchers pointed out.
So they called for more financial and technological support for people in the hardest-hit countries.
The study was released a week after UN climate talks where delegates agreed to a boost in climate funding that developing countries slammed as insufficient.
It also came after Ecuador declared a national emergency over forest fires that have razed more than 10,000 hectares in the country's south.
The world has also been battered by hurricanes, droughts, floods and other extreme weather events during what is expected to be the hottest year in recorded history.