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You have no doubt heard about Chain of Custody (COC) issues in the many forensic TV shows on our screens. The shows where faulty documentation destroys an otherwise carefully prepared case and the criminal goes free! So exactly what is a COC? It is the chronological ‘paper’ trail, showing the collection, transfer, receipt, analysis, storage, and disposal of a sample. At all stages, the sample is in someone’s custody—that person is responsible for it.
The COC is just as important in environmental and agricultural sciences -the integrity of the sampling, testing and reporting chain is very important
Did you hate chemistry at school because it was boring?
Daunting? But now you need to understand
environmental chemistry basics for your job?
Have a look at our new Environmental-Chemistry course which starts at basics and leads you into the fascinating world
of chemicals in the environment. Become
familiar with names like POPs (sounds friendly but it isn’t – Persistent
Organic Pollutants) and PAHs (Polycyclic Aromatic Hydrocarbons released when
fuels or organic matter are burned).Learn the difference between oxygen and ozone. Understand how, what and where chemicals occur in air, water and soil,
including the good, the bad, the ugly.
The good news is that there is a shortage for horticultural
expertise and globally, a growing demand for that expertise.
industry, like all industries is changing fast though; and that is
causing shifts in where work is to be found -both in terms of physical
location and industry sector.
Traditional avenues for employment are
drying up everywhere - I know for a fact that is the way in Australia,
UK & USA ....but at the same time new opportunities are emerging.
comments from John Mason, Principal ACS Distance Education
Aquaponics allows you to grow both plants (eg. vegetables) and fish
in the same system. It can be operated on a small scale at home to feed a
family, or on a large scale as a commercial farm. This is a complicated
way of growing though, with significant benefits, but also challenges.
You can do a lot more with less land, but you do need more equipment and
technical know how.
Click through for more information.
Sandy soils: is it best to water plants by drip irrigation?
Growing healthy plants in sandy soils in dry areas is challenging! This includes gardens in coastal areas as well as crop production on light textured soils, not to mention revegetation of desert areas. Hot temperatures and limited water supplies often make the job even harder. It is therefore vital to use precious water resources as efficiently as possible.