Africa's oldest baobab trees are dying

In this file photo taken on October 26, 2010 Maasai people gather under a baobab tree at Oltukai, 100 km west of Arusha, Tanzania, during a political rally organised by the incumbent Monduli Member of Parliament. (AFP)
Updated 13 June 2018
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Africa's oldest baobab trees are dying

PARIS: Some of Africa’s oldest and biggest baobab trees — a few dating all the way back to the ancient Greeks — have abruptly died, wholly or in part, in the past decade, researchers said Monday.
The trees, aged between 1,100 and 2,500 years and some as wide as a bus is long, may have fallen victim to climate change, the team speculated.
“We report that nine of the 13 oldest... individuals have died, or at least their oldest parts/stems have collapsed and died, over the past 12 years,” they wrote in the scientific journal Nature Plants, describing “an event of an unprecedented magnitude.”
“It is definitely shocking and dramatic to experience during our lifetime the demise of so many trees with millennial ages,” said the study’s co-author Adrian Patrut of the Babes-Bolyai University in Romania.
Among the nine were four of the largest African baobabs.
While the cause of the die-off remains unclear, the researchers “suspect that the demise of monumental baobabs may be associated at least in part with significant modifications of climate conditions that affect southern Africa in particular.”
Further research is needed, said the team from Romania, South Africa and the United States, “to support or refute this supposition.”
Between 2005 and 2017, the researchers probed and dated “practically all known very large and potentially old” African baobabs — more than 60 individuals in all.
Collating data on girth, height, wood volume, and age, they noted the “unexpected and intriguing fact” that most of the very oldest and biggest trees died during the study period.
All were in southern Africa — Zimbabwe, Namibia, South Africa, Botswana, and Zambia.
The baobab is the biggest and longest-living flowering tree, according to the research team. It is found naturally in Africa’s savannah region, and outside the continent in tropical areas to which it was introduced.
It is a strange-looking plant, with branches resembling gnarled roots reaching for the sky, giving it an upside-down look.
The iconic tree can live to be 3,000 years old, according to the website of the Kruger National Park in South Africa, a natural baobab habitat.

“One ancient hollow baobab tree in Zimbabwe is so large that up to 40 people can shelter inside its trunk,” says the park.
“Various baobabs have been used as a shop, a prison, a house, a storage barn, and a bus shelter.”
The tree serves as a massive store of water, and bears fruit that feeds animals and humans.
Its leaves are boiled and eaten as an accompaniment similar to spinach, or used to make traditional medicines, while the bark is pounded and woven into rope, baskets, cloth, and waterproof hats.
The purpose of the study was to learn how the trees get so enormous.
The researchers used radiocarbon dating to analyze samples taken from different parts of each tree’s trunk.
They found that the trunk of the baobab grows from not one but multiple core stems.
According to the Kruger Park, baobabs are “very difficult to kill.”
“They can be burnt, or stripped of their bark, and they will just form new bark and carry on growing,” it states.
“When they do die, they simply rot from the inside and suddenly collapse, leaving a heap of fibers.”
Of the ten trees listed by the study authors, four died completely, meaning all their multiple stems toppled and died together.
The others saw the death of one or several parts.
The oldest tree by far, of which all the stems collapsed in 2010/11, was the Panke tree in Zimbabwe, estimated to have existed for 2,500 years.
The biggest, dubbed Holboom, was from Namibia. It stood 30.2 meters (99 feet) tall and had a girth of 35.1 m.
Arguably the most famous baobab, called Chapman, was a declared a national monument in central Botswana, bearing the carved initials of explorer David Livingstone.
The tree named after South African hunter James Chapman, who visited it in 1852, saw all six its stems topple simultaneously on January 7, 2016 where it had stood for some 1,400 years.
Other than the oldest and biggest, the research team observed that many other mature baobabs had died.
The deaths were not caused by an epidemic, they wrote, with Patrut adding: “there were no signs of disease.”


Why this US cold snap feels bone-shattering when it’s not record-shattering

Updated 03 February 2026
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Why this US cold snap feels bone-shattering when it’s not record-shattering

The brutally frigid weather that has gripped most of America for the past 11 days is not unprecedented. It just feels that way.
The first quarter of the 21st century was unusually warm by historical standards – mostly due to human-induced climate change – and so a prolonged cold spell this winter is unfamiliar to many people, especially younger Americans.
Because bone-shattering cold occurs less frequently, Americans are experiencing it more intensely now than they did in the past, several experts in weather and behavior said. But the longer the current icy blast lasts – sub-freezing temperatures are forecast to stick around in many places — the easier it should become to tolerate.
“We adapt, we get used to things. This is why your first bite of dessert is much more satisfying than your 20th bite,” Hannah Perfecto, who studies consumer behavior at Washington University in St. Louis, wrote in an email. “The same is true for unpleasant experiences: Day 1 of a cold snap is much more a shock to the system than Day 20 is.”
‘Out of practice’ because of recent mild winters
Charlie Steele, a 78-year-old retired federal worker in Saugerties, New York, considers himself a lover of cold weather. In the recent past, he has gone outside in winter wearing a T-shirt and shorts, and has even walked barefoot in the snow. But this January’s deep-freeze is “much, much colder than anything I can remember,” he said.
Steele’s sense of change is backed up data.
There have been four fewer days of subfreezing temperatures in the US per year, on average, between 2001 and 2025 than there were in the previous 25 years, according to data from Climate Central. The data from more than 240 weather stations also found that spells of subfreezing temperatures have become less widespread geographically and haven’t lasted as long — until this year.
In Albany, about 40 miles  from Steele, the change has been more pronounced than the national average, with 11 fewer subfreezing days in the last 25 years than the previous quarter century.
“You’re out of practice,” Steele said. “You’re kind of lulled into complacency.”
Coldest week someone under 30 may have felt
Climate change has shifted what people are used to, said several climate scientists, including Daniel Swain of the University of California’s Water Resources Institute.
“It’s quite possible that for anybody under the age of 30, in some spots this may well be the coldest week of their life,” Swain said.
Jennifer Francis, a climate scientist at the Woodwell Climate Research Center in Falmouth, Massachusetts, said, “humans get used to all kinds of things — city noise, stifling heat, lies from politicians, and winter cold. So when a ‘normal’ cold spell does come along, we feel it more acutely.”
We forget how cold it used to be
People forget how extreme cold feels after just two to eight years of milder winters, according to a 2019 study in the journal Proceedings of the National Academy of Sciences. Americans have gone through a much longer stretch than that.
Over the past 30 years, the average daily low in the continental US has dropped below 10 degrees  40 times, according to meteorologist Ryan Maue, former chief scientist for the National Oceanic and Atmospheric Administration. But in the preceding 30 years, that chilly threshold was reached 124 times.
“People have forgotten just how cold it was in the 20th century,” Texas A&M University climate scientist Andrew Dessler said.
Their wake-up call came late last month, when the country’s average daily low dipped below 10 degrees three times in one week.
Regardless of how it feels, extremely cold weather presents dangers. People and vehicles slip on ice, power can go down, leaving people freezing in homes, and storms limit visibility, making commuting to work or even doing basic errands, potentially perilous. More than 110 deaths have been connected to the winter storms and freezing temperatures since January.
Shaking off our cold ‘rustiness’
As this winter’s frigid days stretch on, people adapt. University of San Diego psychiatrist Thomas Rutledge said people shake off what he calls their “weather rustiness.”
Rutledge explained what he meant via email, recalling the period decades ago when he lived in Alaska. “I assumed that everyone was a good driver in winter conditions. How couldn’t they be with so much practice?” he wrote. “But what I annually observed was that there was always a large spike in car accidents in Alaska after  first big snowfall hit. Rather than persistent skills, it seemed that the 4-6 months of spring and summer was enough for peoples’ winter driving skills to rust enough to cause accidents.”
That’s Alaska. This cold snap hit southern cities such as Dallas and Miami, where it’s not just the people unaccustomed to the cold. Utilities and other basic infrastructure are also ill-equipped to handle the extreme weather, said Francis of the Woodwell Climate Research Center.
While this ongoing cold snap may feel unusually long to many Americans, it isn’t, according to data from 400 weather stations across the continental US with at least a century of record-keeping, as tracked by the Southeast Regional Climate Center.
Only 33 of these weather stations have recorded enough subzero temperatures  since the start of 2026 to be in the top 10 percent of the coldest first 32 days of any year over the past century.
When Steele moved to the Hudson Valley as a toddler in 1949, the average daily low temperature over the previous 10 winters was 14.6 degrees . In the past 10 years, the average daily low was 20.8 degrees .
As a younger man, Steele used to hunt in winter and sit for hours on cold rocks.
“I could never do that now,” he said. “I’m rusty. I’m out of practice.”