Catalyst Volume 21 Issue 3

This issue of Catalyst includes the following articles:

Phytoplasmas - Friend or Foe?

Phytoplasmas are micro-organisms that affect crop plants, modifying their growth. Botanists are seeking to counter their effects.

The Chemistry of the Noble Gases

The noble gases (Group 0 or 8 in the periodic table) are almost inert. This article shows how they were discovered and looks at their chemical and physical properties.

Numbers from Nature

Ecological studies require the gathering and processing of large amounts of data. This article looks at how ant populations are studied in the field.

Life Under a Log

This article describes how a decaying log is used by many different invertebrates and vertebrates as a home and source of nutrients.

Artificial Photosynthesis

Artificial photosynthesis could provide a useful energy supply and reduce the amount of carbon dioxide in the atmosphere. Experiments are underway in labs around the world.

It's Life, But Much As We Already Know It

This article explores the claims made in a scientific paper, that bacteria from a lake in the US had DNA which was significantly different from that of all other known organisms. It also reports on the way it was published, all of which have proved controversial.

Can You Hear Me?

Listening to loud music can be damaging to hearing. This article explains why and how to avoid the problem.

Drilling Down/At Sea with Chikyu

Chikyu is a Japanese drilling ship capable of boring through the Earth's crust to investigate regions where the crust is thinnest. Core samples are examined using a number of scientific techniques.

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

Resources

Phytoplasmas - Friend or Foe?

A Catalyst article about phytoplasmas which are micro-organisms that affect crop plants modifying their growth. The article looks at the damage that they can inflict on crops which in turn can cause famine. Botanists are seeking to counter the effects of phytoplasma disease and the article looks at laboratory...

The Chemistry of the Noble Gases *suitable for home teaching*

This Catalyst article looks at the noble gases (Group 0 or 8 in the periodic table) which are almost inert. This article shows how they were discovered through the use of fractional distillation and looks at their chemical and physical properties.

This article is from Catalyst: GCSE Science Review 2011,...

Numbers from Nature

This Catalyst article looks at the work of field ecologists, discussing how ecological studies require the gathering and processing of large amounts of data. This article looks at how ant populations are studied in the field and how their study can produce information about the way living organisms exist in the...

Life Under a Log

A Catalyst article describing how a decaying log is used by many different invertebrates and vertebrates. The damp environment is suitable for many species. This well illustrated article looks at some of them.

This article is from Catalyst: GCSE Science Review 2011, Volume 21, Issue 3.

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