Latest Science News -- ScienceDaily

08/11/2022 03:25 PM
Creating an 'adult-like' mature human cardiac tissue
Researchers have developed a new cardiac cell-derived platform that closely mimics the human heart, unlocking potential for more thorough preclinical drug development and testing, and better modeling for cardiac diseases.
08/11/2022 02:30 PM
Hubble sees red supergiant star Betelgeuse slowly recovering after blowing its top
The star Betelgeuse appears as a brilliant, ruby-red, twinkling spot of light in the upper right shoulder of the winter constellation Orion the Hunter. But when viewed close up, astronomers know it as a seething monster with a 400-day-long heartbeat of regular pulsations. This aging star is classified as a supergiant because it has swelled up to an astonishing diameter of approximately 1 billion miles. If placed at the center of our solar system it would reach out to the orbit of Jupiter. The star's ultimate fate is to explode as a supernova.
08/11/2022 02:30 PM
Continuous long tracking of migrating insects
By flying with hawkmoths during migration, scientists reveal the insects employ sophisticated flight strategies similar to vertebrates
08/11/2022 01:53 PM
Why thinking hard makes you tired
It's no surprise that hard physical labor wears you out, but what about hard mental labor? Sitting around thinking hard for hours makes one feel worn out, too. Now, researchers have new evidence to explain why this is, and, based on their findings, the reason you feel mentally exhausted (as opposed to drowsy) from intense thinking isn't all in your head.
08/11/2022 01:53 PM
Bioengineered cornea can restore sight to the blind and visually impaired
Researchers and entrepreneurs have developed an implant made of collagen protein from pig's skin, which resembles the human cornea. In a pilot study, the implant restored vision to 20 people with diseased corneas, most of whom were blind prior to receiving the implant. The promising results bring hope to those suffering from corneal blindness and low vision by providing a bioengineered implant as an alternative to the transplantation of donated human corneas, which are scarce in countries where the need for them is greatest.
08/11/2022 01:53 PM
Engineering enzymes to help solve the planet's plastic problem
Researchers have developed a new enzyme engineering platform to improve plastic degrading enzymes through directed evolution.
08/11/2022 01:53 PM
Alcohol use can alter gut microbes, but not in the way you might think
In mouse studies, researchers find that excess alcohol consumption alters gut microbiome but latter is not directly or significantly linked to liver disease.
08/11/2022 09:49 AM
Astronomers confirm star wreck as source of extreme cosmic particles
NASA's Fermi Gamma-ray Space Telescope confirms one supernova remnant as a launch site for some of our galaxy's highest-energy protons.
08/11/2022 08:33 AM
Study finds that sound plus electrical body stimulation has potential to treat chronic pain
A team has found that electrical stimulation of the body combined with sound activates the brain's somatosensory cortex, increasing the potential for using the technique to treat chronic pain and other sensory disorders.
08/10/2022 09:03 PM
First stars and black holes
Just milliseconds after the universe's Big Bang, chaos reigned. Atomic nuclei fused and broke apart in hot, frenzied motion. Incredibly strong pressure waves built up and squeezed matter so tightly together that black holes formed, which astrophysicists call primordial black holes. Did primordial black holes help or hinder formation of the universe's first stars, eventually born about 100 million years later?
08/10/2022 04:10 PM
Brain scans reveal the hidden shape of thinking and predict students' learning better than test scores
Neuroscientists have documented a link between spatial and verbal reasoning by scanning students' brains while taking a course that emphasized spatial learning.
08/10/2022 04:10 PM
New programmable materials can sense their own movements
Researchers have developed a technique to 3D-print materials with customizable mechanical properties that can also sense how they are moving and interacting with their environment. Their method only requires one printing material and a single run on a 3D printer.
08/10/2022 04:10 PM
One more clue to the Moon's origin
Researchers discover the first definitive proof that the Moon inherited indigenous noble gases from the Earth's mantle. The discovery represents a significant piece of the puzzle towards understanding how the Moon and, potentially, the Earth and other celestial bodies were formed.
08/10/2022 04:10 PM
Prehistoric podiatry: How dinos carried their enormous weight
Scientists have cracked an enduring mystery, discovering how sauropod dinosaurs -- like Brontosaurus and Diplodocus -- supported their gigantic bodies on land.
08/10/2022 04:10 PM
Building on the moon and Mars? You'll need extraterrestrial cement for that
Researchers are exploring ways to use clay-like topsoil materials from the moon or Mars as the basis for extraterrestrial cement that could be used by astronauts to create building materials for life in outer space. Scientists have converted simulated lunar and Martian soils into geopolymer cement, which is considered a good substitute for conventional cement.
08/10/2022 01:41 PM
The cost of climate change on economic growth
A study analyzes the effect of global rising temperatures and climate change on Gross Domestic Product, finding nearly a quarter of the countries studied are sensitive to such impacts.
08/10/2022 01:41 PM
New insights on the significance of willpower to self-control
In Greek mythology, the story of Odysseus and the Sirens illustrates a paradigmatic example of self-control. When the hero of Homer's epic prepared to travel past the Sirens, mythical creatures who lure sailors with their enchanted singing, Odysseus instructs his crew to plug their ears with wax and tie him to the ship's mast. That way, Odysseus can listen to the Sirens as he sails by, and the crew can keep their wits. No matter how much he begs to be released, no one will hear his pleas. Was Odysseus exercising willpower with his plan, or was he merely removing his ability to cave to temptation?
08/10/2022 12:37 PM
Clock is ticking to save East Antarctica from climate change
The worst effects of global warming on the world's largest ice sheet could be avoided if nations around the world succeed in meeting climate targets outlined in the Paris Agreement. That's the call from an international team of climate scientists who have examined how much sea levels could rise if climate change melts the East Antarctic Ice Sheet (EAIS).
08/10/2022 12:36 PM
Research identifies, exploits vulnerability in certain high-risk cancers
A subset of cancers exist that produce predominantly poor outcomes because their cells employ a mechanism known as alternative lengthening of telomeres (ALT) to maintain telomere length so they can continue to grow and multiply. Telomeres are caps on the end of chromosomes that serve as protectors for the genetic information contained within the cell.
08/10/2022 12:36 PM
How a harmful fungus renders its host plant defenseless
The fungus Ustilago maydis attacks corn and can cause significant damage to its host. To do this, it first ensures that the plant offers little resistance to the infection. The surgical precision it applies is shown by a new study.
08/10/2022 12:36 PM
Nearly a hundred genes have been lost during the woolly mammoth's evolution
A new study shows that 87 genes have been affected by deletions or short insertions during the course of the mammoth's evolution. The researchers note that their findings have implications for international efforts to resurrect extinct species, including the woolly mammoth.
08/10/2022 12:36 PM
Study shows annual screening before age 50 leads to lower proportions of advanced breast cancer
A new study has found Canadian provinces that annually screen women aged 40-49 had lower proportions of advanced breast cancer compared to women aged 50-59 from provinces that did not hold annual mammograms.
08/10/2022 12:36 PM
Female monkeys with female friends live longer
Anthropology professors and field primatologists have documented the daily life of hundreds of the large-brained capuchin monkeys in Guanacaste, Costa Rica. They have found that female capuchin monkeys who are better integrated into social networks with other adult females tend to survive longer. Social interactions measured include giving and receiving grooming, foraging nearby and helping each other in conflicts by fighting or making aggressive sounds and facial expressions. White-faced capuchin monkeys engage in socially learned human-like rituals to test the quality of their friendships.
08/10/2022 12:35 PM
Amazon's growth limited by lack of phosphorus
Growth of the Amazon rainforest in our increasingly carbon-rich atmosphere could be limited by a lack of phosphorus in the soil, new research shows.
08/10/2022 12:35 PM
How microglia are prompted to change their state to adapt to different areas of the brain
New study shows that microglia cells 'listen in' to neighboring neurons and change to match them.
08/10/2022 12:35 PM
Evidence that giant meteorite impacts created the continents
New research has provided the strongest evidence yet that Earth's continents were formed by giant meteorite impacts that were particularly prevalent during the first billion years or so of our planet's four-and-a-half-billion year history.
08/10/2022 12:35 PM
Even modest climate change may lead to sweeping changes in northernmost forests
Even relatively modest climate warming and associated precipitation shifts may dramatically alter Earth's northernmost forests, which constitute one of the planet's largest nearly intact forested ecosystems and are home to a big chunk of the planet's terrestrial carbon.
08/10/2022 12:35 PM
Ultracold atoms dressed by light simulate gauge theories
Researchers have used the coldest systems in the universe to realize in the laboratory gauge theories, key models of modern physics that describe the fundamental forces of Nature and the behavior of complex quantum materials.
08/10/2022 12:35 PM
Sponges 'sneeze' to dispose of waste
Sneezing out mucus may be one of the oldest ways for organisms to get rid of unwanted waste. A group of researchers found that sponges, one of the oldest multicellular organisms in existence, 'sneeze' to unclog their internal filter systems that they use to capture nutrients from the water. Additionally, authors find that other animals who live with the sponges use their mucus as food.
08/10/2022 10:51 AM
Collagen a key player in breast cancer metastasis
Collagen type XII plays a key role in regulating the organisation of the tumor matrix, reveals a new study.
08/10/2022 10:51 AM
New giant deep-sea isopod discovered in the Gulf of Mexico
Researchers have identified a new species of Bathonymus, the famed genera of deep-sea isopods whose viral internet fame has made them the most famous aquatic crustaceans since Sebastian of 'The Little Mermaid'.
08/10/2022 10:51 AM
Tiny optical sensors could put an end to hospital bed sores
Millions of older hospital patients and nursing home residents suffer excruciating bed sores each year, some of which are fatal. Now, new research could put an end to that with the development of tiny smart bed sensors embedded in hospital mattresses.
08/10/2022 10:51 AM
Climate change leads to invasive insect expansion on West Coast
Climate change has led to warming temperatures in the Pacific Northwest, leading some insect species to expand their range into more northerly oak savannas, according to new research.
08/10/2022 10:51 AM
How calcium ions get into the cellular power stations of plants
Calcium is a very special nutrient. In the cells of most living beings calcium ions function as so-called second messengers to transmit important signals. The same applies equally to animal, plant and fungal cells.
08/10/2022 10:51 AM
Dementia risk may be higher if an upper heart chamber is abnormal
A large, diverse study of over 5,000 older adults in the U.S. found that abnormal size or functioning in the left atrium (one of the two upper heart chambers), even before symptoms are present, may play a role in the development of dementia. The abnormalities, called atrial cardiopathy, appeared to increase participants' risk of developing dementia by 35%.