Deep-dive dinners are the norm for tuna and swordfish, MIT oceanographers find
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Updates every hour. Last Updated: 7-May-2025 13:10 ET (7-May-2025 17:10 GMT/UTC)
MIT oceanographers discovered big fish like tuna and swordfish get a large fraction of their food from the ocean’s twilight zone — a cold, dark layer about half a mile below the surface.
A combination of water management practices has contributed to notable groundwater gains in Central Arizona despite the region dealing with long-term water stress, according to a study led by researchers at The University of Texas at Austin and collaborators in Arizona and Colorado.
In a paper published in Science Bulletin, an international team of scientists examined the extent changes in China’s wetlands from 1980 to 2020 and highlighted the hidden loss and restoration effects based on China_Wetlands product. This consistent dataset (i.e., China_Wetlands) has been created by applying the HOHC method to over 53,000 Landsat images acquired in six time periods from 1980 to 2020.
A group of researchers including scientists of the Earth-Life Science Institute (ELSI) at Institute of Science Tokyo have uncovered a surprising role for calcium in shaping the building blocks of life. Their study reveals that calcium ions help determine the molecular "handedness" (chirality) of tartaric acid polymers—an essential feature of biological molecules like DNA and proteins. This discovery sheds light on how life's uniform molecular structures may have first emerged on early Earth. In a twist on traditional theories, the researchers suggest that simple polyesters, in addition to peptides or nucleic acids, could have adopted this crucial trait on early Earth, offering a fresh perspective on life’s chemical origins.