This week in Earth, environmental, and life sciences research, with a focus on African-led studies published in major open-access journals.
📊 This week at a glance
🌍 African-led research
A hybrid machine-learning model improves monthly sea level predictions along Mediterranean coastlines.
The framework combines variational mode decomposition (VMD, which breaks a complex signal into simpler oscillating parts) and dynamic mode decomposition (DMD) with LSTM (a type of neural network good at sequences) and XGBoost to forecast sea level anomaly. It changes the game because nonstationary sea level behaviour has made accurate prediction hard, and this hybrid approach handles those nonlinear shifts better. For African coastal planners, better monthly forecasts mean stronger flood risk management and adaptation planning in vulnerable Mediterranean and North African cities.
A new species of extinct marine crocodile relative with unique teeth found in Middle Jurassic rocks of eastern Morocco.
The fossil is a teleosauroid (a group of marine crocodylomorphs) with dentition unlike any known from the group. This adds a new branch to the Jurassic marine reptile family tree and shows that eastern Morocco was a hotspot for thalattosuchian diversity. For African palaeontology, it reinforces the continent’s role in understanding Mesozoic marine ecosystems and highlights the value of local fossil heritage.
UAV thermal and multispectral imagery can estimate water status in underutilised taro crops.
The study optimises remote sensing to monitor taro, a neglected but climate-resilient crop, using drone-mounted thermal and multispectral sensors. It changes how we manage irrigation for minor crops that rarely get precision agriculture attention. For African smallholders, this offers a low-cost way to boost water efficiency and food security for indigenous crops.
Artificial neural network architectures can be systematically optimised to predict sweeping gas membrane distillation performance.
The work shows that ANN models, when tuned properly, capture the nonlinear heat and mass transfer in SGMD (a desalination method that uses a membrane and a sweeping gas to remove salts) better than analytical methods. This matters because accurate performance prediction speeds up design of low-temperature desalination. For water-scarce African regions, better models can make solar or waste-heat-driven desalination more reliable and affordable.
Camera traps reveal that leopard tortoise occupancy in arid South Africa is linked to cooler, lower, and slower conditions.
The study uses camera traps to map where leopard tortoises occur in arid areas, finding they favour specific microhabitats. It changes assumptions about tortoise distribution in drylands and provides a baseline for monitoring. For African conservation, this shows how simple camera traps can track cryptic species in understudied arid ecosystems.
Arid soils in southwestern Saudi Arabia show moderate contamination by potentially toxic elements, with cadmium and lead among the main concerns.
Using GIS and multivariate statistics, the study assessed nine metals in Faifa soils and found that while overall risk is moderate, Cd and Pb exceed background levels in some areas. This changes the picture from assuming arid soils are pristine to recognising localised pollution. For African drylands with similar geology and land use, it highlights the need for regular soil monitoring to protect agriculture and human health.
🔬 Global breakthroughs
Coupling CO2 replacement with inhibitor injection can widen the operating window for gas production from hydrates.
The study optimises bottom-hole temperature and pressure combinations to improve methane recovery from gas hydrates while storing CO2. It changes the trade-off between the slower CO2 replacement method and faster depressurisation by showing how inhibitors can boost efficiency. For countries exploring hydrate resources, this offers a pathway to lower-carbon gas production, though field-scale validation is still needed.
Stricter environmental regulations in Europe are linked to skill-biased employment, favouring high-skilled occupations.
The study finds a causal effect of the Environmental Policy Stringency Index on employment patterns, with high-skilled jobs growing relative to low-skilled ones. This changes the debate by showing that green policies can reshape labour demand, not just cut jobs. For African policymakers, it signals that environmental rules may require parallel investment in skills training to avoid widening inequality.
A new method integrates carbon and biodiversity footprints for organisations using their activity data.
The framework allows any organisation to calculate both carbon and biodiversity footprints from the same activity data, making trade-offs visible. It changes sustainability accounting by moving beyond carbon-only metrics. For African businesses and NGOs, this offers a practical way to track and reduce impacts on ecosystems while addressing climate goals.
Dire wolves were a distinct North American lineage that split from other canids millions of years ago, with ancient gene flow from coyotes and grey wolves.
Genomes from two dire wolves show they were not closely related to living grey wolves despite similar appearance, and about two-thirds of their ancestry came from a ghost lineage. This changes the canid family tree and confirms dire wolves as a separate species. For African researchers, it demonstrates how palaeogenomics can resolve evolutionary relationships of extinct predators, a method applicable to Africa’s rich fossil carnivore record.
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