
South Africa's 'cradle of humankind' caves reopen to public
Seated on sandbags in a knee-deep grid dug in South Africa's Sterkfontein caves, where one of our earliest ancestors was found, Itumeleng Molefe swept ancient soil into a blue dustpan, each brushstroke hunting for hidden clues.
Nearby, visitors marvelled at the weathered limestone rocks hanging from the ceiling of the caves, millions of years old.
Located 50km northwest of Johannesburg, the caves closed nearly three years ago due to flooding and reopened in April with a new experience bringing tourists closer to the scientific action.
The complex is housed within the Cradle of Humankind World Heritage Site, a rich source of artefacts for palaeontologists since it was first discovered.
'My aim is to find important bones here,' said the 40-year-old Molefe.
His most prized find since joining the excavation team in 2013 was an early human hand bone.
His father was part of the team that uncovered South Africa's most famous find, a skeleton dubbed 'Little Foot', in the caves.
Deriving its name from the size of the bones first discovered in the 1990s, it is the most complete specimen of a human ancestor yet discovered, estimated to be between 1.5 and 3.7 million years old.
Little Foot is from a branch of the human family tree called Australopithecus, Latin for 'southern ape' – considered the ancestors of modern humans, with a mixture of ape-like and human characteristics.
'This reopening represents a significant evolution in how we share the story of human origins,' said Nithaya Chetty, dean of the University of the Witwatersrand faculty of science, which manages the caves and the nearby museum.
'Visitors now have unique opportunities to engage with active live science and research, all happening in real time,' said the professor.
At their peak before the Covid-19 pandemic, the caves received up to 100 000 tourists a year.
The closure had left a lingering feeling of sadness, said Witwatersrand archaeology professor Dominic Stratford, recalling busloads of schoolchildren and inquisitive visitors.
'Everyone felt like we were missing something,' he told AFP.
A temporary exhibit of the fossils has been set up at the museum, where visitors will also get a chance to see 'Mrs Ples', the most complete skull of an Australopithecus africanus, found in South Africa in 1947.
Guiding helmet-clad visitors through the 2.5 kilometres of caves bathed in soft blue LED lights, Trevor Butelezi gestures toward a shadowy passage that leads to an underground lake.
'It's actually a beautiful cavity,' said the 34-year-old tourism graduate, his voice echoing gently off the walls.
'Africa gave rise to humanity and it's not a small thing,' he said, paraphrasing a quote from the South African palaeontologist Phillip Tobias.
For now, those hoping to glimpse the original Little Foot will have to wait for heritage month in September. The skeleton, which took two decades to excavate and assemble, is only displayed on special occasions.
Let us know by leaving a comment below, or send a WhatsApp to 060 011 021 1
Subscribe to The South African website's newsletters and follow us on WhatsApp, Facebook, X and Bluesky for the latest news.
By Garrin Lambley © Agence France-Presse
Hashtags

Try Our AI Features
Explore what Daily8 AI can do for you:
Comments
No comments yet...
Related Articles


The South African
12 hours ago
- The South African
Why TONIGHT will be the longest of 2025
The winter solstice marks the point when the Earth's axial tilt is furthest away from the sun in your hemisphere. Image: Wikimedia Commons The winter solstice is the shortest day and longest night of the year, marking the point when the Earth's axial tilt is furthest away from the sun in your hemisphere. It occurs once a year, around 20 or 21 June in the southern hemisphere. In the northern hemisphere, this same day is known as the summer solstice, as it's their longest day and shortest night. 🗓️ Date: Saturday, 21 June 🕓 Time: Approximately 22:42 At this time, the sun reaches its most northerly point in the sky relative to the southern hemisphere, and the region experiences its fewest daylight hours. The sun rises latest and sets earliest Daylight is at its shortest – roughly 10 hours or less in many parts of South Africa – roughly 10 hours or less in many parts of South Africa The sun appears at its lowest noon altitude in the sky in the sky After this point, days gradually begin to lengthen, signaling the slow return toward summer Colder mornings and nights: This is usually the peak of South Africa's cold, dry winter , especially inland This is usually the peak of South Africa's , especially inland Longer nights: Perfect for stargazing, since the skies are often clearer in winter Perfect for stargazing, since the skies are often clearer in winter Cultural observances: Some Indigenous African communities and spiritual groups mark the solstice with seasonal rituals or ceremonial gatherings Some Indigenous African communities and spiritual groups mark the solstice with or Agricultural relevance: Traditionally, it signaled the turning point for winter crops or preparation for spring planting In Cape Town , the sun will rise at 07:51 and set at 17:44 on the winter solstice , the sun will rise at and set at on the winter solstice The term 'solstice' comes from Latin solstitium , meaning ' sun stands still ', referring to the apparent halt in the sun's movement before it reverses direction , meaning ' ', referring to the apparent halt in the sun's movement before it reverses direction The June solstice marks the start of astronomical winter, though meteorological winter begins on 1 June Warm up with seasonal food : Winter solstice is a great time to cook hearty stews and enjoy hot beverages : Winter solstice is a great time to cook hearty stews and enjoy hot beverages Reflect or set intentions : Many cultures treat the solstice as a time for introspection , planning, or renewal : Many cultures treat the solstice as a time for , planning, or renewal Enjoy the stars: With longer nights and less cloud cover, it's an ideal time for observing constellations and planets Let us know by leaving a comment below, or send a WhatsApp to 060 011 021 1 Subscribe to The South African website's newsletters and follow us on WhatsApp, Facebook, X and Bluesky for the latest news.

IOL News
a day ago
- IOL News
Warning signs on climate flashing bright red: top scientists
The planet's energy imbalance has nearly doubled in the last 20 years, and scientists do not know how long oceans will continue to massively soak up this excess heat. Image: Alan Kearney / Connect Images via AFP From carbon pollution to sea-level rise to global heating, the pace and level of key climate change indicators are all in uncharted territory, more than 60 top scientists warned Thursday. Greenhouse gas emissions from burning fossil fuels and deforestation hit a new high in 2024 and averaged, over the last decade, a record 53.6 billion tonnes per year -- that is 100,000 tonnes per minute -- of CO2 or its equivalent in other gases, they reported in a peer-reviewed update. Earth's surface temperature last year breached 1.5 degrees Celsius over pre-industrial levels for the first time, and the additional CO2 humanity can emit with a two-thirds chance of staying under that threshold long-term -- our 1.5C "carbon budget" -- will be exhausted in two years, they calculated. Investment in clean energy outpaced investment in oil, gas and coal last year two-to-one, but fossil fuels account for more than 80 percent of global energy consumption, and growth in renewables still lags behind new demand. Included in the 2015 Paris climate treaty as an aspirational goal, the 1.5C limit has since been validated by science as necessary for avoiding a catastrophically climate-addled world. The hard cap on warming to which nearly 200 nations agreed was "well below" two degrees, commonly interpreted to mean 1.7C to 1.8C. With the 1.5C level now expected to be breached in the coming years, "we are already in crunch time for these higher levels of warming," co-author Joeri Rogelj, a professor of climate science and policy at Imperial College London, told journalists in a briefing. "The next three or four decades is pretty much the timeline over which we expect a peak in warming to happen." 'The wrong direction' No less alarming than record heat and carbon emissions is the gathering pace at which these and other climate indicators are shifting, according to the study, published in Earth System Science Data. Human-induced warming increased over the last decade at a rate "unprecedented in the instrumental record", and well above the 2010-2019 average registered in the UN's most recent Intergovernmental Panel on Climate Change (IPCC) report, in 2021. The new findings -- led by the same scientists using essentially the same methods -- are intended as an authoritative albeit unofficial update of the benchmark IPCC reports underpinning global climate diplomacy. They should be taken as a reality check by policymakers, the authors suggested. "If you look at this year's update, things are all moving in the wrong direction," said lead author Piers Forster, head of the University of Leed's Priestley Centre for Climate Futures. The rate at which sea levels have shot up in recent years is also alarming, the scientists said. After creeping up, on average, well under two millimetres per year from 1901 to 2018, global oceans have risen 4.3 mm annually since 2019. What happens next? An increase in the ocean watermark of 23 centimetres (nine inches) over the last 125 years has been enough to imperil many small island states and hugely amplify the destructive power of storm surges worldwide. An additional 20 centimetres of sea level rise by 2050 would cause $1 trillion in flood damage annually in the world's 136 largest coastal cities, earlier research has shown. Another indicator underlying all the changes in the climate system is Earth's so-called energy imbalance, the difference between the amount of solar energy entering the atmosphere and the smaller amount leaving it. So far, 91 percent of human-caused warming has been absorbed by oceans, sparing life on land. But the planet's energy imbalance has nearly doubled in the last 20 years, and scientists do not know how long oceans will continue to massively soak up this excess heat. Dire future climate impacts worse than what the world has already experienced are already baked in over the next decade or two. But beyond that, the future is in our hands, the scientists made clear. "We will rapidly reach a level of global warming of 1.5C, but what happens next depends on the choices which will be made," said co-author and former IPCC co-chair Valerie Masson-Delmotte. The Paris Agreement's 1.5C target allows for the possibility of ratcheting down global temperatures below that threshold before century's end. Ahead of a critical year-end climate summit in Brazil, international cooperation has been weakened by the US withdrawal from the Paris Agreement. "Governments, financiers, and businesses must put this (report) in focus in the run-up to COP30 in Brazil," said David King, former UK Chief Scientific Advisor and Chair of the Climate Crisis Advisory Group. "If today's data tells us anything, it's that we do not have time to delay any further."


eNCA
2 days ago
- eNCA
How did life survive 'Snowball Earth'? In ponds, study suggests
Earth has not always been so hospitable to live. During several ice ages, the planet's surface was almost completely frozen over, creating what has been dubbed "Snowball Earth". Liquid water appears to be the most important ingredient for life on any planet, raising the question: how did anything survive such frosty, brutal times? A group of scientists said Thursday that they had found an astonishing diversity of micro-organisms in tiny pools of melted ice in Antarctica, suggesting that life could have ridden out Snowball Earth in similar ponds. During the Cryogenian Period between 635 and 720 million years ago, the average global temperature did not rise above -50 degrees Celsius (-58 Fahrenheit). The climate near the equator at the time resembled modern-day Antarctica. Yet even in such extreme conditions, life found a way to keep evolving. Fatima Husain, the lead author of a new study published in Nature Communications, told AFP there was evidence of complex life forms "before and after the Cryogenian in the fossil record". "There are multiple hypotheses regarding possible places life may have persisted," said Husain, a graduate student at the Massachusetts Institute of Technology. Perhaps it found shelter in patches of open ocean, or in deep-sea hydrothermal vents, or under vast sheets of ice. The tiny melted ice pools that dotted the equator were another proposed refuge. These ponds could have been oases for eukaryotes, complex organisms that eventually evolved into multicellular life forms that would rise to dominate Earth, including humans. - Could aliens be hiding in ponds? - Melted ice ponds still exist today in Antarctica, at the edges of ice sheets. In 2018, members of a New Zealand research team visited the McMurdo ice shelf in east Antarctica, home to several such pools, which are only a few metres wide and less a metre deep. The bottom of the ponds are lined with a mat of microbes that have accumulated over the years to form slimy layers. "These mats can be a few centimetres thick, colourful, and they can be very clearly layered," Husain said. They are made up of single-celled organisms called cyanobacteria that are known to be able to survive extreme conditions. But the researchers also found signs indicating there were eukaryotes such as algae or microscopic animals. This suggests there was surprising diversity in the ponds, which appears to have been influenced by the amount of salt each contained. "No two ponds were alike," Husain said. "We found diverse assemblages of eukaryotes from all the major groups in all the ponds studied." "They demonstrate that these unique environments are capable of sheltering diverse assemblages of life, even in close proximity," she added. This could have implications in the search for extraterrestrial life. "Studies of life within these special environments on Earth can help inform our understanding of potential habitable environments on icy worlds, including icy moons in our Solar System," Husain said. Saturn's moon Enceladus and Jupiter's Europa are covered in ice, but scientists increasingly suspect they could be home to simple forms of life, and several space missions have been launched to find out more about them. By Bénédicte Rey