How schools are being built for extreme heat — without aircon
Years later, while studying abroad, Kere returned to his home village to build a light and airy school where children could learn in comfort despite temperatures that can hit 45°C.
But the Berlin-based architect did not use air conditioning. Instead he incorporated a host of cooling features into Gando Primary School that he has since applied to projects around Africa.
Kere, who won architecture's highest honour, the Pritzker Prize in 2022, is among architects pioneering sustainable school designs for a warming planet.
'My own school was so hot it was hard to concentrate,' he told the Thomson Reuters Foundation. 'So I wanted to build a school that would be comfortable and inspiring for children.'
Studies from Brazil to Vietnam show heat significantly affects learning. In a report last year, the World Bank warned climate change was threatening educational attainment, creating an 'economic time bomb'.
Experts say classrooms should be no hotter than 26°C.
In Gando, villagers were initially shocked when Kere announced he would build the school from clay, but the material is a natural temperature regulator, absorbing heat during the day and releasing it at night.
Concrete and plate glass may look contemporary, but Kere said they make buildings hot, necessitating air conditioners.
This creates a vicious circle. Energy-intensive air conditioners, which expel hot air outdoors, contribute to global warming, which then fuels demand for more air conditioning.
Instead, Kere uses passive cooling techniques.
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Mail & Guardian
20-07-2025
- Mail & Guardian
A fifth of world's wetlands may vanish by 2050, scientists warn
The destruction of wetlands affects water availability, biodiversity, climate stability and the wellbeing of all life, including people's livelihoods. Photo: File This is according to a This puts up to $39 trillion in ecosystem benefits at risk, more than any other ecosystem. The report found that since 1970, at least 400 million hectares of wetlands have been lost — that is 22% of the global total. And nearly a quarter of those that have survived are in a degraded state, a figure that is increasing. Degradation is now as pressing a concern as outright loss, the report said, warning that these losses significantly affect water availability, biodiversity, climate stability and human well-being. The report was launched before the 15th Meeting of the Conference of the Contracting Parties (COP15) to the Convention on Wetlands in Victoria Falls, Zimbabwe, which starts on Wednesday. Despite covering just 6% of the Earth's surface, wetlands provide ecosystem services that include clean water, food production, flood protection and carbon storage that total more than 7.5% of global GDP. They also support a disproportionately high share of livelihoods across sectors such as agriculture, aquaculture and tourism. Yet every year, 0.52% of wetlands are lost, undermining efforts to tackle climate change and biodiversity loss. The report noted that these losses are unevenly distributed, with the highest rates occurring in low-income regions where wetlands are more ecologically critical and closely linked to local livelihoods, food systems and water supplies. National reports submitted under the Convention on Wetlands and global citizen science data confirm that the ecological condition of wetlands is deteriorating in most regions, particularly in Africa, Latin America and the Caribbean. But their situation is increasingly worsening in Europe and North America. The wetland types that have experienced the most significant historical declines include inland marshes, peatlands and lakes. Despite their immense value, wetlands continue to be lost or degraded at an alarming rate, 'threatening our collective future', wrote Musonda Mumba, secretary-general of the convention, in the report's foreword. 'The data presented in this outlook are sobering,' she said. 'Wetland degradation is widespread across all regions. Millions of hectares have been lost. Many freshwater species remain at risk.' The societal costs — from reduced access to clean water and increased vulnerability to disasters to rising emissions — are escalating. 'The economic value of the wetlands lost in the last 50 years exceeds $5.1 trillion, yet this figure does not fully reflect their intrinsic worth or cultural significance. While restoration is essential, prevention is more cost-effective. Once degraded, wetlands are expensive and difficult to restore,' Mumba noted. Cumulative pressures, including land-use change, pollution, agricultural expansion, hydrological disruption, invasive species and the effect of climate change — such as rising sea levels and drought — are driving these declines. 'These drivers are frequently interlinked, leading to nonlinear and difficult-to-reverse degradation processes,' the report said. National reports to COP15 showed that 74% of countries are undertaking wetland restoration to some extent, 66% have national targets in place, and more than 70% have identified priority sites. 'However, progress is uneven, and only a limited number of countries are implementing restoration at sufficient scale,' the report said. It detailed how vulnerable and disadvantaged groups in society receive fewer of the benefits of wetlands than those with greater assets (such as property rights, financial capital and social status), but are also more dependent upon the goods and services provided by natural wetlands. 'Similarly, when wetlands are converted to other land uses, notably intensive agriculture or built infrastructure, ownership of the benefits tends to be held privately and by those with greater assets, while the cost of losing the wetland ecosystem services tends to fall on the disadvantaged … 'Additionally, disadvantaged groups tend to be more reliant upon regulating services provided by wetlands, such as flood protection and clean water, because they tend to live in more vulnerable areas and have less access to alternative (engineered) options.' Peatlands store more carbon than any other terrestrial ecosystem yet many are degraded and now emit greenhouse gases rather than storing them. Coastal wetlands, such as mangroves, seagrasses and salt marshes, sequester carbon rapidly, and buffer coastlines from rising sea levels and storms. Inland wetlands, such as rivers, lakes and marshes, regulate water flows to help prevent flooding and sustain water supplies during droughts. The report said that without urgent investment in these systems, climate goals will remain out of reach. Four pathways are outlined to reversing wetland loss and 'unlocking nature-positive investment'. These include integrating wetland value in decision-making; recognising wetlands as key to the global water cycle — for their role in storing, filtering, and regulating water; embedding wetlands in innovative financing mechanisms — including carbon markets, resilience bonds and blended finance; and mobilising public and private resources for wetland restoration. The report features a wide selection of case studies that demonstrate progress is possible — and prevention is cheaper than restoration, which can cost anywhere from $1 000 to $70 000 a hectare depending on the ecosystem. In Zambia's Kafue Flats, an A national case study from South Africa highlights the new automated wetland condition assessment methodology developed through the The innovative approach involves 'GIS automation and stakeholder validation to provide a scalable, cost-effective way of tracking wetland ecosystem conditions across the country', the report noted. Coenraad Krijger, the chief executive of Wetlands International, said in a statement that the report is a sobering read, but 'it does showcase pathways to a brighter future — if we all work together'.

The Herald
18-07-2025
- The Herald
Smile or fruit, beware of the emoji you send — especially at work
Red heart, banana and peach emojis may look innocent — and they are. But in what context and sequence are you using them? That's what could be problematic with the emojis you love sending. Dr Zakeera Docrat, the University of the Western Cape's forensic and legal linguist, has warned people to think about the messages they send with emojis, especially in the workplace. Speaking at a webinar under the theme: 'Beyond the smile: Emojis, communication and misinterpretation in the modern workplace', Docrat said one should be careful of the emojis they send. She urged companies to develop policies that regulate communication in the workplace. 'It would be dependent on what you want to control within the specific workplace but you can never have one policy that would be applied and adopted across various spaces, that would never work. It needs to be a policy that is specific to your needs and as a forensic and legal linguist, it's always good to consult us and to say, these are the issues that we have. 'We need to formulate a policy that controls the behaviour and communication practices. It has to be something that's updated quite frequently,' Docrat said. What do we deem as appropriate workplace communication? 'A lot of the emojis are open to interpretation, it's based on context, the nature of the relationship between you and the recipient ... If there is a power dynamic between you and another colleague, is it appropriate for you to be sending them an emoji? Is it an appropriate response to send an emoji? Why are you doing it? 'The role of gender is also important and for me it influences the power dynamic, especially if it is a senior male colleague. If a male colleague sends me a red heart emoji, and I don't have that type of relationship where I know them very well and I get sent a heart, I would immediately be offended.' So, do you know what the emojis you love sending mean and are they appropriate to send to your colleagues? 'What are you communicating with your emoji? Take for an example the tongue out emojis. Are you joking or are you being insulting?' Docrat, who testified in the Judicial Conduct Tribunal hearing into sexual harassment against Eastern Cape judge president Selby Mbenenge, said emojis mean different things to different people. Andiswa Mengo has accused Mbenenge of sexually harassing her over eight months in 2021 and 2022. She has testified that not only did he send her unwanted sexually explicit WhatsApp messages, but had attempted to solicit oral sex from her in his chambers and sent her a photo of his penis. Said Docrat: 'When we talk about the analysis or interpretation of emojis, we can't be divorced in a sense from the culture and the language in which the emojis are being used. It is very important for an expert, and I don't want to say [expert should] be from that culture or know that language but [the expert] has to have an association [with the culture or language it is being used]. 'You have to be able to read the context. Understanding the language that is being used in a written text, understanding the culture is extremely important.' Emojis with sexual connotations included a peach and eggplant with water droplets used in sequence; an eggplant, banana, lips, lip biting, also used in sequence.


Mail & Guardian
17-07-2025
- Mail & Guardian
Francis Nyamnjoh's novel a new grace for the old order
We have recently seen a number of coming-of-age stories emerging from various African countries that mark a shift from childhood to the experiences of the youth. It also says something about the new sense of growing in this time. Most of these stories bring new perspectives to understanding the African youth and the ways they treat their life to a sort of relocating themselves. While this emerging genre focuses on the complexities and difficulties of our times, it also aspires to the future. The works are no longer confined to politics, or obsession with the past. The future is brightened in these stories, even though it is tough and stressful. Francis Nyamnjoh's novel, Echoes of Grace, is a stunning, bright and promising account of a Cameroonian girl who spent her adolescence in a Catholic school, Queen of Rosary of Converted Hills, where she is granted a scholarship to pursue her education. The novel is a bildungsroman with a focus on youth development in society. It is a story of transformation into a community set in an imaginary, yet recognisable, Cameroon, which is described as a country grappling with corruption and societal ills. It is a story of commitment that not only changes an individual's life but also has a lasting effect on the community. The change is followed by dedication, a flame of hope ignites motivation in the protagonist, Pearl, which establishes seeds for growing socially. Pearl follows her mother's advice to join a missionary school where she develops her sense of commitment despite the gaze of privileged students alienating her from the school. In five years, she becomes acutely aware of her background compared with those of the daughters of ministers, directors and business people. She manages to navigate the difficulties she faces in the school, thanks to her mentor, Father Honeywell, who is committed to social justice and integrity and intellectually guides her to challenge the politics. 'He [Father Honeywell] provided me with books, study materials, and a safe haven where I could freely explore my passions. His unwavering belief in me, even during times of self-doubt, was a constant source of strength and inspiration,' says Pearl. Her mother's words also resonate and ignite courage in her: 'The world can be a harsh place, especially for young women with ambitions the size of the sky like yours. But remember, you are strong, you are capable, and there is a fire within you that cannot be extinguished. Go forth and shine, my darling. Make us proud.' The story also acknowledges African tradition and spirituality through the role of ancestors in community life. At the missionary school, she finds solace in a hidden grotto, surrounded by the ancient paintings of powerful women, which makes her feel connected to her ancestors. A wise woman named Nimo Dangha-Dangha, who has been ostracised by the community for her orthodox ways, is another of Pearl's mentors. Nyamnjoh highlights the role of women in leadership. Pearl becomes a successful woman who initiates projects with her father. The message of the novel is that Africa could rise again if women are given access to leadership and education to foster the right men and women to fight the corruption in politics and ill-determined leadership in Africa. The novel is more appreciative of the role of faith in shaping African minds and personal growth inspired by religious values leading to strengths and resilience in society. Thinking of Nyamnjoh's early works, especially his play, Convert, in which comes his very harsh critique of the church, Echoes of Grace suggests a kind of reconciliation with the church — somehow acknowledging its pioneering role in helping people to deviate from politics to personality. Growth lies at the inner side that needs to be uncovered in the light of guidance. Pearl unpacks her potential, thanks to two dedicated mentors from the society, while Nimo Dangha-Dangha helps her to see the potential inherited from the ancestors. Father Honeywell enlightens her way and teaches her how to navigate the politics of life. Nyamnjoh's half utopian and futurist account invites us to rethink leadership and governance in ill-governed African countries. Echoes of Grace is more promising than demanding, focusing on potentials than shortcomings, solutions than impediments to improvement. Echoes of Grace is published by Langaa RPCIG.