Natural filter cleaning polluted South African river for watering food gardens

By Kevin Winter, Senior Scholar in Environmental & Geographical Science, University of Cape Town. First published in The Conversation on 12 August 2026 Every day, millions of litres of polluted water flow through many South African rivers and disappear into the sea. In South Africa, the small Stiebeuel River in Franschhoek, about 75 kilometres east […]

Continue reading→

Gardening for migrating birds

By Staff Writer EVERY YEAR, billions of birds representing more than 100 species complete an epic journey to spend the southern summer in South Africa. They escape freezing winters in Europe and Asia, or fly from other parts of Africa to chase the seasonal rains and warm weather. These incredible long-distance travelers start arriving in […]

Continue reading→

The Future of Forests

By Richard Heinberg, originally published by Resilience.org Our species’ origin and destiny are entangled with the roots and branches of trees. We evolved in and around trees, and we’ve learned to breed and plant them for their fruit, nuts, wood, and blossoms, taking their seeds with us as we migrated-hence the English walnut, native to […]

Continue reading→

Don’t just plant trees, plant forests to restore biodiversity for the future

By John Parker, Senior Scientist in Community Ecology, Smithsonian Institution; Justin Nowakowski, Senior Scientist in Spatial Ecology and Conservation, Smithsonian Institution. First published in The Conversation on 20 April 2026 Around the world, people plan to plant more than 1 trillion trees this decade in an ambitious effort to slow climate change and reduce biodiversity […]

Continue reading→

Energy: A Reader

by GST Staff This solar farm lets cattle roam under moving panels SILICON RANCH HAS BROUGHT something online commercially that you don’t see every day: a utility-scale solar farm where cattle graze under moving panels. The Nashville-based developer has launched its new “CattleTracker” system at the Christiana Solar Ranch in Tennessee. It’s the first commercial […]

Continue reading→

Bioregioning Is Our Future

By Richard Heinberg, Resilience Lately I’ve been reading Andrew Schelling’s Tracks Along the Left Coast, a biography of linguist, anthropologist, and anarchist Jaime de Angulo (1887-1950). De Angulo was a character worth knowing about. His affluent Spanish parents gave him a civilized upbringing in fashionable Paris; nevertheless, he had a wild streak. So, before he […]

Continue reading→

Cape Town’s wildflowers are a world treasure: six insights from a new checklist

By Dian Spear – Senior research scientist, Stellenbosch University; Nicola van Wilgen-Bredenkamp – Research associate, Stellenbosch University; Patricia Holmes – Plant ecologist, Stellenbosch University; Ronell R Klopper – Extraordinary Lecturer, University of Pretoria; Tony Rebelo – Scientist, South African National Biodiversity Institute. First published in The Conversation on 11 February 2026 CAPE TOWN, IN SOUTH […]

Continue reading→

Namibia and Angola’s remote Ovahimba mountains reveal a haven for unique plants – new survey

By Vera De Cauwer, Associate Professor Natural Resource Management, Namibia University of Science and Technology. First published in The Conversation on October 19, 2023 The Kaokoveld region, covering north-western Namibia and south-western Angola, is one of the remotest areas in southern Africa. Although it’s extremely dry, it is a centre of species endemism: many species […]

Continue reading→