How analyzing ancient and modern polar bear samples reveals the full scope of global warming
The global climate is changing and the Arctic is warming rapidly. These are objectively true statements that most people have come to accept.
The global climate is changing and the Arctic is warming rapidly. These are objectively true statements that most people have come to accept.
Ecology
Sep 1, 2023
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60
Researchers may have an answer to the mystery of why an anglers' favorite, the golden trevally, is so widespread globally—the prized fish might 'hitchhike' with whale sharks.
Plants & Animals
Aug 31, 2023
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29
Below-cloud evaporation is the evaporation of raindrops under unsaturated water vapor pressure and from cloud base to the ground during precipitation, leading to variability in the ratio of stable isotopes in rainfall. It ...
Earth Sciences
Aug 30, 2023
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1
In May 2020, some unusual rocks containing distinctive greenish crystals were found in the Erg Chech sand sea, a dune-filled region of the Sahara Desert in southern Algeria.
Space Exploration
Aug 30, 2023
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129
The word "fractals" might inspire images of psychedelic colors spiraling into infinity in a computer animation. An invisible, but powerful and useful, version of this phenomenon exists in the realm of dynamic magnetic fractal ...
Condensed Matter
Aug 28, 2023
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261
Scandium radioisotopes are potentially useful for medical imaging such as positron emission tomography (PET) scans. However, health care providers do not currently use these isotopes to image cancer because they are difficult ...
Materials Science
Aug 14, 2023
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1
Otodus megalodon, the biggest shark of all time, has long captured the imaginations of paleontologists and the public alike. Scientific fascination spawns from the sheer enormity of their fossilized teeth. As big as human ...
Plants & Animals
Aug 2, 2023
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8
Carbon dioxide levels in Earth's atmosphere—and, consequently, ocean temperatures—are rising. How high and how fast ocean temperatures can rise can be learned from temperature measurements of ancient oceans. At the same ...
Earth Sciences
Aug 1, 2023
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14
The Amazon River is the largest river in the world. It discharges about one fifth of global freshwater runoff, resulting in a freshwater plume rich in nutrients and trace elements entering the Atlantic Ocean.
Earth Sciences
Jul 31, 2023
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0
Researchers have shown from stable isotope ratios in the baleen of pygmy right whales that this species of baleen whales remains in waters off southern Australia year-round and feeds on Australian krill and copepods. Unlike ...
Plants & Animals
Jul 31, 2023
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