The Big Picture on pages 10-11 of this issue of Catalyst shows scientists in Antarctica launching a balloon which will travel up through the atmosphere to a height of 34 km above the Earth’s surface. This balloon is part of NASA’s BARREL mission, probing the radiation belts which surround the Earth.

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This article from Catalyst looks at the ageing process in bananas. As bananas age, spots develop on their skins. These contain fluorescent substances which can be seen with a UV torch.

The article is from Catalyst: Secondary Science Review 2014, Volume 25, Issue 2.

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A Catalyst article about biologists looking for patterns in the distribution of barnacle species on the sea shore. Barnacles are arthropods which live as tiny larvae in the sea and then cement themselves, head down, on suitable rocks, build a shell, poke their legs out of the top of it and start to filter feed. The...

A Catalyst article about Darwin's travels on the Beagle which gave him ideas about evolution. Darwin spent almost five years on board HMS Beagle as it sailed around the world. The purpose of the voyage was to map navigation channels around the coast of South America. Darwin was the ship’s naturalist and companion...

A Catalyst article about gaining Chartered Engineer status. The process from application through education to professional experience is explained.

This article is from Catalyst: GCSE Science Review 2009, Volume 19, Issue 4.

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A Catalyst article about how burning fossil fuels releases extra carbon dioxide into the atmosphere, which contributes to global warming. However, burning renewable biofuels is part of the normal carbon cycle and does not contribute to an increase in atmospheric carbon dioxide. This article looks at the ways in...

This Catalyst article examines the differences between fossil fuels and biofuels. At present, fossil fuels are used to provide most of our global energy requirements. Fossil fuels are a finite resource as they take millions of years to form and the remaining supplies are being used at a greater rate than can be...

A Catalyst article describing how glow worms and other insects emit light by bioluminescence. All over the world, on land and in the sea, living things have been making light for millions of years. From the glow of the sea on a dark night due to myriads of phytoplankton, to the dance of the male fireflies trying to...

A Catalyst article describing how new materials can be designed by studying natural materials and how they work. In particular the development of Velcro, military fabric, swimwear and waterproofing is looked at. These products were developed by scientific study of natural products such as plant burrs, pinecones,...

A Catalyst article looking at the use of plant cells to generate electricity via photosynthesis. This branch of science is called biophotovoltaics. The Sun is the ultimate source of energy for almost all life on Earth and harnessing this energy is one of the great scientific and technological challenges....

This Catalyst article describes how, as two tectonic plates separate, wide fissures appear in the ground in northern Ethiopia. Eventually a new ocean will form in the area affected. The Earth’s surface is not stable or permanent. The tectonic plates that form our planet’s outer crust are constantly moving around,...

This Catalyst article looks at orchids, their breeding, and why they have great commercial value. The family of Orchidaceae is one of the largest plant families, with about 900 genera and 25,000 species. Orchids are amongst the oldest flowering plants. After a long evolution, they have developed a very intimate...

This article explores the relationship between black holes and gravitational waves.

Catalyst is a science magazine for students aged 14-19 years. Find out more about Catalyst magazine: www.stem.org.uk/catalyst