These resources have been reviewed and selected by STEM Learning’s team of education specialists for factual accuracy and relevance to teaching STEM subjects in UK schools.

Catalyst volume 27 issue 3: full magazine

This issue of Catalyst contains the following articles:

Could purple tomatoes help us be healthier?

This Catalyst article looks at how tomato plants have been genetically modified so that they produce high levels of substances thought to reduce the risk of diseases including cancer and heart disease.

Who owns the plants you eat?

This Catalyst article looks at how plant breeders can claim rights over the varieties they develop. It also focuses on the question 'Does this give them too much control?'.

Stress: good or bad?

This Catalyst article looks at how stress can have an impact on people's well-being but at the same time, people need a degree of stress in their lives.

The sands of time

This Catalyst article looks at how plants colonise sandy beaches, producing dune systems and ultimately new land.

What is analytical science?

This Catalyst article explores analytical science which is the branch of chemistry concerned with determining which substances are present in a sample and how much.

Catching a cheat

This Catalyst article looks at analytical chemists, who are involved in many kinds of testing, including drug testing to catch cheats in sport.

Try this: chromatography

This Catalyst article presents an activity in chromatography, which can be used to separate the different dyes used in coloured inks.

A life in science: Katherine Johnson

This Catalyst article focuses on Katherine Johnson, who was one of a number of black American women whose work as 'computers' made NASA's early work possible.

Proxima b: our next homeworld?

This Catalyst article explores Proxima b, which is an exoplanet orbiting in one of the nearest star systems to the Solar System. It looks at how estimates of its temperature suggest it might be a suitable target for future human. 

Catalyst is a science magazine for students aged 14-19 years. Annual subscriptions to print copies of the magazine can be purchased from Mindsets.

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