This identification guide covers the common crustose coralline algae found in central New Zealand.

Common questions about clouds, how they are formed and how they behave.

The climate of Otago is perhaps the most diverse of any region in New Zealand.

NIWA provides ambient air quality monitoring services using low-cost ODIN (Outdoor Dust Information Node) sensors.

This web camera is available thanks to the support of Waikato Regional Council.

NIWA is today issuing some scientific information on the parasite Bonamia ostreae, recently discovered in Big Glory Bay, Stewart Island, and the risk it poses to the Bluff oyster fishery.

NIWA maintains the national climate database for New Zealand, and can supply data in a variety of ways.

The Intergovernmental Panel on Climate Change (IPCC) is charged with assessing the most up to date scientific, technical and socio-economic research on climate change.

Longfin eels are the largest and longest-lived fish in New Zealand's freshwaters, and where they are present they are the top predator.

How may agricultural activities increase sediments in waterways?

Atmospheric carbon dioxide (CO2) is measured continuously at Baring Head, providing the longest running record of this type in the Southern hemisphere.