Ginkgo trees could help answer questions about climate change. A ginkgo leaf in the Fossils Atmospheres Project at the Smithsonian Research Centre.  Photo: Carolyn Kaster/AP Ginkgo trees could help answer questions about climate change. A ginkgo leaf in the Fossils Atmospheres Project at the Smithsonian Research Centre.  Photo: Carolyn Kaster/AP
Ginkgo trees could help answer questions about climate change. A ginkgo leaf in the Fossils Atmospheres Project at the Smithsonian Research Centre. Photo: Carolyn Kaster/AP

Fossil leaves may reveal climate in last era of dinosaurs - and could be key to understanding global warming

  • The ginkgo tree has been around for 200 million years, and its leaves change slightly depending on the carbon dioxide level in the atmosphere
  • Scientists are comparing 100-million-year-old ginkgo leaf fossils to leaves from ginkgo trees grown today at various carbon dioxide levels

Topic |   Archaeology and paleontology
Ginkgo trees could help answer questions about climate change. A ginkgo leaf in the Fossils Atmospheres Project at the Smithsonian Research Centre.  Photo: Carolyn Kaster/AP Ginkgo trees could help answer questions about climate change. A ginkgo leaf in the Fossils Atmospheres Project at the Smithsonian Research Centre.  Photo: Carolyn Kaster/AP
Ginkgo trees could help answer questions about climate change. A ginkgo leaf in the Fossils Atmospheres Project at the Smithsonian Research Centre. Photo: Carolyn Kaster/AP
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