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Updates every hour. Last Updated: 30-Apr-2025 00:08 ET (30-Apr-2025 04:08 GMT/UTC)
New research shows that turtles are responding to climate change by nesting earlier.
20 February 2025/Kiel. How dangerous are submarine landslides in deep-sea canyons? To answer this question, the German research vessel SONNE sets sail today from Wellington, New Zealand, for a multi-week expedition in the South West Pacific. Led by Prof. Dr Sebastian Krastel (Kiel University, CAU), scientists from the CAU and the GEOMAR Helmholtz Centre for Ocean Research Kiel will investigate geological processes in two submarine canyons in cooperation with New Zealand partner institutes. The aim of the MAWACAAP project is to better understand the factors that influence submarine landslides. The data collected will help to improve risk assessments for coastal regions and underwater infrastructure worldwide.
New London, Conn. — A new study led by Connecticut College professor Peter Siver provides strong evidence that palm trees once flourished in subarctic Canada, reshaping scientific understanding of Arctic climates during the early Eocene, about 48 million years ago.
Published in Annals of Botany, the research identifies fossilized phytoliths—microscopic silica structures from plant tissues—in ancient lakebed sediments from Canada’s Northwest Territories. These fossils, alongside remains of warm-water aquatic species, indicate a year-round warm climate, challenging previous assumptions about when ice first formed in the Northern Hemisphere.
“The discovery of palm fossils this far north confirms that the Arctic was once ice-free, with a climate similar to today’s subtropics,” Siver said.
Some of the fossil analysis took place in Siver’s lab at Connecticut College, where students contributed to the research. The study also documents the earliest known fossilized stegmata—linear arrays of phytoliths in palm foliage—showing this evolutionary trait had developed by the early Eocene.
Siver’s findings provide critical insights into Earth’s climate history and help refine models predicting future climate change.
A new publication by researchers from the Department of Earth Sciences at the University of Oxford shows that the relationship between water temperature and the main biological mechanism by which the ocean captures atmospheric carbon dioxide (CO2) is far more complicated than previously thought.
Drawing on long-term time-series data from oceanographic stations such as the Bermuda Atlantic Time-Series, the research highlights how the quality of currently available data limits our understanding of this critical mechanism in the carbon cycle.