A diagram of a lunar eclipse from De Sphaera Mundi by Johannes de Sacrobosco, c. 1240 AD.
New York Public Library
Medieval monks recorded hundreds of lunar eclipses. Centuries later, their descriptions are helping scientists unravel the role of volcanoes in historical climate change.
Ice core analysis can help us better understand historical ‘black swan’ events like pandemics and droughts.
The Washington Post via Getty Images
Ice cores can preserve evidence of ‘black swan’ events like pandemics and droughts, but the glaciers from which they are collected are disappearing.
The last time global carbon dioxide levels were around 400ppm was four million years ago. On average, the world was 3℃ warmer, but in high northern latitudes, it was up to 14℃ warmer than today.
The death of Caesar.
New research suggests ancient climate change shaped the fate of western civilisation.
The analysis of large amounts of ice from Antarctica’s Taylor Valley has helped scientists to tease apart the natural and human-made sources of the potent greenhouse gas methane.
Analysis of 12,000-year-old Antarctic ice reveals that methane leaks from fossil fuel extraction play a larger role than previously thought.
Senator Jacqui Lambie, speaking on Q&A.
During a Q&A discussion about climate change, Tasmanian Senator Jacqui Lambie said it was four degrees hotter 110,000 years ago. Is that right?
The past century hasn’t seen the worst drought that Australia’s climate can throw at us.
A new millennium-long record reveals that Australia has suffered longer droughts and wet periods than those recorded in the past century’s weather observations.
Million-year-old ice likely lies more than 3km below Antarctica’s surface.
Tas van Ommen
Ice cores tell us vital information about how the world’s climate has changed - and how it will change in the future.
Ice core samples storing mysteries from bygone eras.
Ice cores are cylinders of ice drilled from glaciers and ice sheets. When snow falls it takes with it a record of many aspects of the atmosphere. As long as no melting takes place, this information is…
The past, on ice.
National Ice Core Lab
How can air bubbles trapped in ice for millions of years, or fossilised fern fronds, or the chemical make-up of rocks that were underwater in the distant past provide us with an inkling of our future…
By studying ice cores, researchers can measure the methane emissions from thousands of years earlier.
The past is the key to the future. When snow falls on polar ice sheets, in Greenland and Antarctica for example, air is trapped between the snowflakes. Year after year, the snow compacts under its own…
A 364-metre-long ice core record has revealed an unusual pattern of rapid warming across the Antarctic Peninsula over the…