Story: Climate change
Cores (samples) from sediment on the sea floor can provide information about past climate. Unlike ice cores, which supply direct information, sediment cores give indirect evidence. For example, to determine temperature, scientists painstakingly pick out and count plankton shells, which twist in different directions depending on the temperature of the water they grew in.
About this item
GNS Science
Photograph by Tim Naish
Permission of GNS Science must be obtained before any use of this image
