Catalyst Volume 22 Issue 3
This issue of Catalyst includes the following articles:
The Price of Rice
This article looks at how genetics has increased yields of rice, a staple food for billions of people.
What Causes the Aurora?
The aurora borealis is caused by the interaction of the solar wind with the Earth's magnetic field. This article explains how satellites are testing thoeires of how this happens.
This Catalyst article looks at the changing definition of the kilogram, a unit of mass and a base unit in the SI system (the International System of units).
What's in a Cell?
This Catalyst article explores the complex structure of cells, and numerous theories of how they were formed.
This article looks at how Californians are being encouraged to prepare for the next big earthquake.
Seven Billion - and Counting
The human population of Earth has reached seven billion. This article explores the impact human activity may have on the planet.
Marie Curie - a Life of Discovery
This article looks at Marie Curie who discovered two radioactive elements and showed that radioactivity was a property of atoms, not compounds.
Going Bananas about Radioactivity
This article looks at how we are exposed to radiation from many different sources, including the food we eat - even bananas.
Catalyst is a science magazine for students aged 14-19 years. Annual subscriptions to print copies of the magazine can be purchased from Mindsets.
HEALTH and SAFETY
Any use of a resource that includes a practical activity must include a risk assessment. Please note that collections may contain ARCHIVE resources, which were developed at a much earlier date. Since that time there have been significant changes in the rules and guidance affecting laboratory practical work. Further information is provided in our Health and Safety guidance.