Five South African science wins worth celebrating.

From home-grown hydrogen technology to flowers that choose sides, South African researchers gave us plenty to celebrate during the country’s first month-long science showcase.

July marked South Africa’s first National Science Month, an expanded version of the annual National Science Week. Under the theme Science, Technology and Innovation Are for Everyone, the month aimed to bring research out of laboratories and show South Africans how science shapes everyday life.

Here are five local science stories that deserve their moment under the microscope.

1. South Africa is making its own green hydrogen technology

One of the month’s biggest moments came in Sasolburg, where South Africa launched a locally developed 2kW Proton Exchange Membrane electrolyser.

Put simply, an electrolyser uses electricity to split water into hydrogen and oxygen. When renewable electricity powers the process, the hydrogen can be used as a cleaner alternative to fossil fuels in areas such as transport and heavy industry.

The laboratory-scale machine was developed using publicly funded South African intellectual property through a partnership involving the Department of Science, Technology and Innovation, North-West University, the South African National Energy Development Institute and Sasol.

Researchers will use it to test green hydrogen technology under South African weather and renewable-energy conditions. The bigger win is that local scientists are building the knowledge and skills needed for an industry South Africa hopes to compete in, rather than simply importing every piece of the puzzle.

2. A small telescope is bringing space science closer to home

Outside Hammanskraal, a compact, low-cost Transient Array Radio Telescope, or TART, is helping researchers and community members observe the radio sky. Unlike an ordinary telescope, which collects visible light, a radio telescope detects radio waves coming from space.

The open-source instrument can monitor the whole sky and track objects such as satellites, near-Earth objects and brief events in space. The telescope was installed in Hammanskraal in 2025, but returned to the spotlight during National Science Month through a four-day workshop combining astronomy with African Indigenous Knowledge.

The exciting part is that the telescope gives young people and local communities direct access to equipment, training and research that can otherwise feel a galaxy away.

3. Did gum disease help shape the human face?

Wits University researchers examined 71 fossil jaws from early human ancestors that lived between 5.3 million and 2.6 million years ago. They found that early members of the Homo group experienced significantly more loss of the bone supporting their teeth than their Australopithecine relatives.

That bone loss is associated with periodontal disease, better known as serious gum disease. The researchers propose that gum disease may have interacted with genetic changes that produced smaller teeth and weaker chewing muscles. Over many generations, those changes could have contributed to flatter faces and changes in the shape of the skull.

The research proposes a possible evolutionary link, rather than proving that gum disease single-handedly redesigned our ancestors.

4. Seven new research units are tackling major health problems

The South African Medical Research Council established seven new extramural research units from 1 April, bringing its total to 30. These are research teams based at universities and other institutions but supported by the council.

Their work covers some of South Africa’s most urgent health challenges, including childhood brain conditions, pre-eclampsia, ageing, public health, artificial intelligence, mineworkers’ health and new treatments for cancer, infections and neurological disorders.

One unit will use artificial intelligence to improve public-health decisions. Another is developing nano-sized drug-delivery technology, which could help medicine reach specific parts of the body more effectively.

World-class science needs more than one brilliant person with a clever idea. It needs stable institutions capable of turning ideas into treatments, policies and tools people can actually use.

5. The butterfly lily finally spilt its genetic secrets

South Africa’s butterfly lily has been confusing scientists for more than a century. Each plant produces flowers that lean consistently to either the left or the right. The flower’s female part bends one way, while its pollen-producing stamen points in the opposite direction. This arrangement helps it exchange pollen with flowers leaning the other way and reduces self-pollination.

An international team, including University of Cape Town researchers and students, has now identified two genes involved in deciding which way the flower bends. They also discovered that gravity helps guide the flower’s development after a researcher accidentally placed a bud upside down.

The discovery helps researchers understand how living things break left-right symmetry during development. Humans do something similar: our hearts usually develop on the left side of our bodies.

The researchers were solving a plant puzzle, not designing a new crop. But understanding how genes and environmental signals shape plants could eventually support wider work in evolutionary biology, conservation and agriculture.

South Africa’s first National Science Month showed that local research is not limited to giant telescopes and people using words nobody else understands.

It is happening in communities, universities and laboratories across the country. From cleaner energy to ancient teeth and flowers with a preferred direction, South African scientists are asking big questions, and finding some wonderfully unexpected answers.