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A rock surface containing a circular pattern with a central depression. The scale bar = 10 cm. Images modified from: Helm, C.W.; Cawthra, H.C.; De Vynck, J.C.; Helm, C.J.; Rust, R.; Stear. W. Patterns in the Sand: A Pleistocene hominin signature along the South African coastline? Proceedings of the Geologists’ Association (2019)

Ancient humans may have made patterns and sculptures on South Africa’s beaches

Given that we know humans moved across these landscapes, we wondered whether there might also be evidence of other forms of human activity on these surfaces of sand.
The view of our planet from aboard the International Space Station. Expedition 43/NASA

Curious Kids: What is the Earth made of?

Of all the planets in the solar system, there’s a reason we call Earth home. It’s made of just the right stuff. It’s not too small, or too big, or too hot or too cold. It’s just right.
Green roofs, like this one in Sao Paulo, Brazil, have many benefits. Leonardo Ikeda/Shutterstock

How buildings in Johannesburg could benefit from green roofs

South Africa needs to develop low-cost housing solutions that are inherently comfortable and environmentally sustainable. Green roofs could be part of these solutions.
One of the Klasies River spinning discs and the replica built for the recording studio. Kumbani et al (2019), Journal of Archaeological Science: Reports

How our African ancestors made sound in the Stone Age

Working with bone artefacts from archaeological sites in South Africa's southern Cape region, we've been able to show that some implements might have been used for sound production in the past.