Showing 20 articles starting at article 661
< Previous 20 articles Next 20 articles >
Categories: Biology: Developmental, Paleontology: Climate
Published Clues about the Northeast's past and future climate from plant fossils
(via sciencedaily.com) A team of researchers is working to understand the details of the climate for the eastern portion of the United States from the Miocene, which unfortunately is a blank spot on paleo-climate maps. New findings suggest the future climate will be very close to the warmer, wetter, and more homogeneous climate similar to conditions experienced 5 million years ago.
Published Using the power of artificial intelligence, new open-source tool simplifies animal behavior analysis
(via sciencedaily.com) A team has developed a new software tool to help researchers across the life sciences more efficiently analyze animal behaviors.
Published Single gene causes sea anemone's stinging cell to lose its sting
(via sciencedaily.com) When scientists disabled a single regulatory gene in a species of sea anemone, a stinging cell that shoots a venomous miniature harpoon for hunting and self-defense shifted to shoot a sticky thread that entangles prey instead, according to a new study.
Published Early Cretaceous shift in the global carbon cycle affected both land and sea
(via sciencedaily.com) Geologists doing fieldwork in southeastern Utah's Cedar Mountain Formation found carbon isotope evidence that the site, though on land, experienced the same early Cretaceous carbon-cycle change recorded in marine sedimentary rocks in Europe. This ancient carbon-cycle phenomenon, known as the 'Weissert Event' was driven by large, sustained volcanic eruptions in the Southern Hemisphere that greatly increased carbon dioxide levels in the atmosphere and produced significant greenhouse climate effects over a prolonged time.
Published Rewiring blood cells to give rise to precursors of sperm
(via sciencedaily.com) Scientists transform blood cells to regain a flexible fate, growing into a precursor of sperm cells.
Published Bouncing seismic waves reveal distinct layer in Earth's inner core
(via sciencedaily.com) Data captured from seismic waves caused by earthquakes has shed new light on the deepest parts of Earth's inner core, according to seismologists.
Published New knowledge about ice sheet movement can shed light on when sea levels will rise
(via sciencedaily.com) The trawling of thousands of satellite measurements using artificial intelligence has shown researchers that meltwater in tunnels beneath Greenland's ice sheet causes it to change speed, and in some places, accelerate greatly towards the ocean. This can increase melting, especially in a warming climate, which is why the study's researchers think that it is important to keep an eye on.
Published First stem cells from a bat species known to harbor SARS-CoV-2 could shed light on virus survival and molecular adaptability
(via sciencedaily.com) Researchers have generated the first induced pluripotent stem cells (iPSCs) from bats, gaining valuable insights into the close relationship between bats and viruses.
Published Scientists make stunning discovery, find new protein activity in telomeres
(via sciencedaily.com) Researchers made the stunning discovery that telomeres contain genetic information to produce two small proteins, one of which they found is elevated in some human cancer cells, as well as cells from patients suffering from telomere-related defects.
Published Climate: Lessons from the latest global warming
(via sciencedaily.com) 56 million years ago, the Earth experienced one of the largest and most rapid climate warming events in its history: the Paleocene-Eocene Thermal Maximum (PETM), which has similarities to current and future warming. This episode saw global temperatures rise by 5-8°C. It was marked by an increase in the seasonality of rainfalls, which led to the movement of large quantities of clay into the ocean, making it uninhabitable for certain living species. This scenario could be repeated today.
Published New technology revolutionizes the analysis of old ice
(via sciencedaily.com) Ice cores are a unique climate archive. Thanks to a new method, greenhouse gas concentrations in 1.5 million year old ice can be measured even more accurately.
Published European summer droughts since 2015 were most severe over centuries -- but multi-year droughts also happened in the past
(via sciencedaily.com) The 2015--2018 summer droughts have been exceptional in large parts of Western and Central Europe over the last 400 years, in terms of the magnitude of drought conditions. This indicates an influence of human-made global warming. However, multi-year droughts have occurred frequently in the 17th and 18th century, although not as severe.
Published What do early Earth's core formation and drip coffee have in common?
(via sciencedaily.com) A new technique provides fresh insight into the process by which the materials that formed Earth's core descended into the depths of our planet, leaving behind geochemical traces that have long mystified scientists.
Published AI analyzes cell movement under the microscope
(via sciencedaily.com) Using artificial intelligence (AI), researchers can now follow cell movement across time and space. The method could be very helpful for developing more effective cancer medications.
Published Before global warming, was the Earth cooling down or heating up?
(via sciencedaily.com) A review article addresses a conflict between models and evidence, known as the Holocene global temperature conundrum.
Published Drug alleviates autism-associated behavior in mice
(via sciencedaily.com) The behavioral disorders observed in autism are associated with a multitude of genetic alterations. Scientists have now found another molecular cause for this condition. The transcription factor MYT1L normally protects the molecular identity of nerve cells. If it is genetically switched off in human nerve cells or in mice, the functional changes and symptoms typical of autism occur. A drug that blocks sodium channels in the cell membrane can reverse the consequences of MYT1L failure and alleviate the functional and behavioral abnormalities in mice.
Published Creating 3D objects with sound
(via sciencedaily.com) Scientists have created a new technology to assemble matter in 3D. Their concept uses multiple acoustic holograms to generate pressure fields with which solid particles, gel beads and even biological cells can be printed. These results pave the way for novel 3D cell culture techniques with applications in biomedical engineering.
Published Genetic switch makes the eyes of male bees large and of female bees small
(via sciencedaily.com) Bee researchers have identified a new gene in honeybees, which is responsible for the dimorphic eye differentiation between males and females of the species. The researchers have now presented this gene and the evolutionary genetic conclusions they have drawn from it.
Published Previously unknown cell mechanism could help counter cancer and aging
(via sciencedaily.com) In a new study, researchers discovered an unknown mechanism of how cells 'remember' their identity when they divide -- the cells' so-called epigenetic memory.
Published Computer model IDs roles of individual genes in early embryonic development
(via sciencedaily.com) Computer software can predict what happens to complex gene networks when individual genes are missing or dialed up more than usual. Mapping the roles of single genes in these networks is key to understanding healthy development and finding ways to regrow damaged cells and tissues. Understanding genetic errors could provide insight into birth defects, miscarriage or even cancer.