This is an ice core showing annual rings. The oldest ice ever retrieved was about 950 thousand years old.
Dr Katja Ridel’s interest has always been chemistry, and after she finished her PhD in Germany, she took on a position at NIWA in New Zealand. One of the projects she is working on is her ...
A changing climate The Earth’s climate is always changing, but the changes are usually very slow – typically taking hundreds to thousands of years. Natural processes such as variations in the ...
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