Water clarity is assessed with a 1 m long acrylic tube.
New Zealand has 425,000 kilometres of rivers and streams to look after. Catchment groups are being formed around the country ...
An industrial purple dye spill devastated the Oruarangi Stream ecosystem in 2013. It’s hard to believe such an event could ...
When you look across a lake, what colour do you expect to see? The common answer is usually blue – ...
Use these Material World resources for NZ Curriculum levels 1 and 2 to explore the characteristics of solids, liquids, gases ...
Clean water is vital for ecosystems and the economy. The National Institute of Water and Atmospheric Science (NIWA), regional councils ...
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