The natural greenhouse effect vs the human enhanced greenhouse effect

 






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Retailers, Sustainability and the Power of Narratives

 When we think about sustainability in food systems, we often focus on farmers or producers. However, after reading the different articles on food systems and food governance, I realized how much power retailers actually have in shaping what sustainability means for consumers. Supermarkets and large retail companies do not only sell products; they also influence production standards, consumer behavior, and even political discussions around food systems. Today, most major retailers define sustainability through concepts such as ethical sourcing, carbon reduction, traceability, recyclable packaging, and responsible supply chains. Labels such as “organic,” “fair trade,” or “sustainably sourced” have become common marketing tools. According to Fuchs and Kalfagianni, retailers use what they call “discursive power” to legitimize their role in food governance. In other words, they shape the narrative around sustainability and position themselves as key actors capable of solving environmen...
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Food Systems Under Pressure: Climate and Livelihoods in Africa Recent news highlights how food systems are increasingly under stress globally, with direct implications for Africa and countries like Senegal. One major issue is the impact of extreme heat and climate change on agriculture. A recent UN-backed report warns that rising temperatures are reducing crop yields, stressing livestock, and making it unsafe for farmers to work in many regions, including sub-Saharan Africa . These environmental impacts affect water availability, soil quality, and biodiversity, while also threatening food production systems that are already highly climate-sensitive. In Senegal, where agriculture is largely rain-fed, these risks are particularly significant, making farmers highly vulnerable to climate shocks . A second issue is the growing food insecurity crisis linked to drought, conflict, and economic instability. A recent global report indicates that hunger is increasing, especially in regions like W...
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Impacts of palm oil

Palm oil is one of the most widely traded vegetable oils in the world and is used extensively in food products, cosmetics and biofuels. Oil palm is often considered one of the most land-efficient oil crops, producing substantially higher yields per hectare than alternatives such as soybean, rapeseed or sunflower oil (Meijaard et al., 2020). However, the rapid expansion of plantations has generated growing concerns regarding deforestation, greenhouse gas emissions, biodiversity loss and social impacts, particularly in tropical regions (Vijay et al., 2016; Ayompe et al., 2021). One of the strongest connections between palm oil and climate change is deforestation. Vijay et al. (2016) show that oil palm expansion has become an important driver of forest conversion in tropical regions, particularly in Southeast Asia. Forests and peatlands store large amounts of carbon, and when they are cleared or burned to establish plantations, significant greenhouse gas emissions are released into the at...
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