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Science Daily is is an online source for topical science articles active since 1995. It features articles on a wide variety of science topics including: astronomy, exoplanets, computer science, nanotechnology, medicine, psychology, biology, geology, climate, space, physics, mathematics, chemistry, archeology, paleontology, and others.

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Last feed update: Wednesday June 3rd, 2020 09:49:05 PM

'Unparalleled' discovery of ancient skeletons: Earliest maize cultivation in Mesoamerica

Wednesday June 3rd, 2020 07:11:58 PM
An international team of researchers investigated the earliest humans in Central America and how they adapted over time to new and changing environments, and how those changes have affected human life histories and societies.

Metasurface design methods can make LED light act more like lasers

Wednesday June 3rd, 2020 07:11:51 PM
Researchers continue to push the boundaries of LED design a little further with a new method that could pave the way toward more efficient and versatile LED display and lighting technology.

A promise to restore hearing

Wednesday June 3rd, 2020 06:43:38 PM
For the first time, researchers have used base editing to restore partial hearing to mice with a recessive mutation in the gene TMC1 that causes complete deafness, the first successful example of genome editing to fix a recessive disease-causing mutation.

Pinpointing the origins of Jerusalem's Temple Mount

Wednesday June 3rd, 2020 06:43:33 PM
Integrating radiocarbon dating and microarchaeology techniques has enabled more precise dating of the ancient Wilson's Arch monument at Jerusalem's Temple Mount, according to a new study.

Social status, not size, determines reproductive success for female mountain gorillas

Wednesday June 3rd, 2020 06:43:31 PM
Dominance rank among female mountain gorillas is not related to body size but does increase their reproductive output according to new research.

Genetic outcomes of translocating bighorn sheep

Wednesday June 3rd, 2020 06:43:29 PM
Bighorn sheep have maintained a distinctive population genetic structure in Wyoming, even with historical population losses and translocations.

The need for conservation of natural springs in drying climate

Wednesday June 3rd, 2020 05:25:48 PM
Researchers have described the importance of springs in a drying climate.

Double-sided solar panels that follow the sun prove most cost effective

Wednesday June 3rd, 2020 05:25:43 PM
Solar power systems with double-sided (bifacial) solar panels -- which collect sunlight from two sides instead of one -- and single-axis tracking technology that tilts the panels so they can follow the sun are the most cost effective to date, researchers report. They determined that this combination of technologies produces almost 35% more energy, on average, than immobile single-panel photovoltaic systems, while reducing the cost of electricity by an average of 16%.

'Poisoned arrow' defeats antibiotic-resistant bacteria

Wednesday June 3rd, 2020 05:25:41 PM
Poison is lethal all on its own -- as are arrows -- and together, they can take down the strongest opponents. A team of Princeton researchers have found an antibiotic that simultaneously punctures bacterial walls and destroys folate within their cells -- killing like a poisoned arrow -- while proving immune to antibiotic resistance.

Super water-repellent materials are now durable enough for the real world

Wednesday June 3rd, 2020 05:25:39 PM
Superhydrophobic materials have long promised surfaces that never needed cleaning, or medical equipment that no microbe could ever possibly stick to -- but have always been let down by the fact they are very easily damaged. A new armor-plated water repelling material can withstand anything the scientists throw at it.

Why some older adults remember better than others

Wednesday June 3rd, 2020 05:25:18 PM
This work marks the beginning of an effort to better understand memory and memory loss in older adults using advanced imaging and data analysis techniques.

Graphene and 2D materials could move electronics beyond 'Moore's Law'

Wednesday June 3rd, 2020 04:29:49 PM
New developments in spintronics could lead to graphene being used as a building block for next-generation electronics.

Next-generation cockroach-inspired robot is small but mighty

Wednesday June 3rd, 2020 04:29:48 PM
Dubbed HAMR-JR, this microrobot is a half-scale version of the cockroach-inspired Harvard Ambulatory Microrobot or HAMR. About the size of a penny, HAMR-JR can perform almost all of the feats of its larger-scale predecessor, making it one of the most dexterous microrobots to date.

New test of dark energy and expansion from cosmic structures

Wednesday June 3rd, 2020 04:05:51 PM
A new paper has shown how large structures in the distribution of galaxies in the Universe provide the most precise tests of dark energy and cosmic expansion yet.

Etching the road to a hydrogen economy using plasma jets

Wednesday June 3rd, 2020 04:05:49 PM
Hydrogen is a clean energy source that can be produced by splitting water molecules with light. However, it is currently impossible to achieve this on a large scale. In a recent breakthrough, scientists developed a novel method that uses plasma discharge in solution to improve the performance of the photocatalyst in the water-splitting reaction. This opens doors to exploring a number of photocatalysts that can help scale-up this reaction.

First optical measurements of Milky Way's Fermi Bubbles probe their origin

Wednesday June 3rd, 2020 04:05:42 PM
Astronomers have for the first time measured the Fermi Bubbles in the visible light spectrum. The Fermi Bubbles are two enormous outflows of high-energy gas that emanate from the Milky Way and the finding refines our understanding of the properties of these mysterious blobs.

Scientists decipher the role of carbon and the break-up of continents

Wednesday June 3rd, 2020 04:05:40 PM
An international collaboration has led scientists to new insights into the storage and dynamic transfer of carbon below thick and very old continental crust.

Ultra-bright X-ray source awakens near a galaxy not so far away

Wednesday June 3rd, 2020 04:05:34 PM
A new ultra-bright source of X-rays has awakened in between our galactic neighbors the Magellanic Clouds, after a 26-year slumber. This is the second-closest such object known to date, with a brightness greater than a million Suns.

Study in twins finds our sensitivity is partly in our genes

Wednesday June 3rd, 2020 02:45:52 PM
Some people are more sensitive than others -- and around half of these differences can be attributed to our genes, new research has found.

Scientists discover what an armored dinosaur ate for its last meal

Wednesday June 3rd, 2020 02:45:50 PM
More than 110 million years ago, a lumbering 1,300-kilogram, armor-plated dinosaur ate its last meal, died, and was washed out to sea in what is now northern Alberta. This ancient beast then sank onto its thorny back, churning up mud in the seabed that entombed it -- until its fossilized body was discovered in a mine near Fort McMurray in 2011.

Astronomers capture a pulsar 'powering up'

Wednesday June 3rd, 2020 02:45:49 PM
Astronomers have, for the first time, observed the full, 12-day process of material spiraling into a distant neutron star, triggering an X-ray outburst thousands of times brighter than our Sun.

Solar hydrogen production: Splitting water with UV is now at almost 100% quantum efficiency

Wednesday June 3rd, 2020 02:45:47 PM
Scientists have successfully split water into hydrogen and oxygen using light and meticulously designed catalysts, and they did so at the maximum efficiency meaning there was almost no loss and undesired side reactions. This latest breakthrough in solar hydrogen production makes the likelihood of scalable, economically viable hydrogen production more than likely, paving the way for humanity to make the switch to clean energy.

Rivers help lock carbon from fires into oceans for thousands of years

Wednesday June 3rd, 2020 02:05:14 PM
The extent to which rivers transport burned carbon to oceans - where it can be stored for tens of millennia - is revealed in new research. The study calculates how much burned carbon is being flushed out by rivers and locked up in the oceans. Oceans store a surprising amount of carbon from burned vegetation, for example as a result of wildfires and managed burning. The research team describe it as a natural - if unexpected - quirk of the Earth system.

Two lefties make a right -- if you are a one-in-a-million garden snail

Wednesday June 3rd, 2020 02:05:05 PM
A global campaign to help find a mate for a left-coiling snail called 'Jeremy' has enabled scientists to understand how mirror-image garden snails are formed. The findings show that the rare left-spiraling shell of some garden snails is usually a development accident, rather than an inherited condition.

Scientists engineer human cells with squid-like transparency

Tuesday June 2nd, 2020 10:34:19 PM
Scientists described how they drew inspiration from cephalopod skin to endow mammalian cells with tunable transparency and light-scattering characteristics.

New research deepens understanding of Earth's interaction with the solar wind

Tuesday June 2nd, 2020 10:34:17 PM
Scientists have reproduced a process that occurs in space to deepen understanding of what happens when the Earth encounters the solar wind.

Behaviors and traits that influence social status, according to evolutionary psychologists

Tuesday June 2nd, 2020 10:34:12 PM
Beyond fame and fortune, certain traits and behaviors may have pervasive influence in climbing the social ladder, according to a study by evolutionary psychologists.

Pulmonary embolism and COVID-19

Tuesday June 2nd, 2020 10:34:08 PM
Researchers say early diagnosis of a life-threatening blood clot in the lungs led to swifter treatment intervention in COVID-19 patients. A new study finds that 51 percent of patients found to have a pulmonary embolism, or PE, were diagnosed in the Emergency Department, the entry point for patients being admitted to the hospital.

Antibiotic-destroying genes widespread in bacteria in soil and on people

Tuesday June 2nd, 2020 10:34:03 PM
Researchers have found that genes that confer the power to destroy tetracycline antibiotics are widespread in bacteria. But the researchers have also created a chemical compound that shields tetracyclines from destruction, restoring the antibiotics lethality. The findings indicate an emerging threat to one of the most widely used classes of antibiotics -- but also a promising way to protect against that threat.

An inexpensive technique shows how decisions light up the brain

Tuesday June 2nd, 2020 10:33:58 PM
A technique called COSMOS will help researchers understand how our brains work and aid in the development of new drugs. The inventors have created an instructional website to help other researchers build their own relatively-inexpensive COSMOS systems.

Scientists detect crab nebula using innovative gamma-ray telescope

Tuesday June 2nd, 2020 10:33:54 PM
The prototype Schwarzschild-Couder Telescope (SCT) is part of an international effort, known as the Cherenkov Telescope Array (CTA), which aims to construct the world's largest and most powerful gamma-ray observatory, with more than 100 similar telescopes in the northern and southern hemispheres.

Sea snail, human insulin hybrid could lead to better diabetes treatments

Tuesday June 2nd, 2020 10:32:36 PM
Nearly a century after insulin was discovered, an international team of researchers report that they have developed the world's smallest, fully functional version of the hormone, one that combines the potency of human insulin with the fast-acting potential of a venom insulin produced by predatory cone snails. The finding, based on animal studies, could jumpstart the development of insulin treatments capable of improving the lives of those with diabetes.

Smart devices should space out vibrations to maximize user alert benefits

Tuesday June 2nd, 2020 07:13:21 PM
A research team found that haptic feedback (such as vibration feedback) causes distraction, but this loss of focus lasts only for about one second. The findings can help designers improve the usability of notification features in devices.

Citizen scientists spot closest young brown dwarf disk yet

Tuesday June 2nd, 2020 07:13:18 PM
Scientists spot a brown dwarf disk that is the closest young system yet discovered.

Reflecting sunlight to cool the planet will cause other global changes

Tuesday June 2nd, 2020 07:13:15 PM
Study finds reflecting sunlight to cool the planet will weaken extratropical storm tracks, causing other global changes.

Exotic nanotubes move in less-mysterious ways

Tuesday June 2nd, 2020 06:18:04 PM
Researchers capture the first video of boron nitride nanotubes in motion to prove their potential for materials and medical applications.

'A litmus paper for CO2:' Scientists develop paper-based sensors for carbon dioxide

Tuesday June 2nd, 2020 05:05:12 PM
A new sensor for detecting carbon dioxide can be manufactured on a simple piece of paper, according to physicists.

Impact of COVID-19 infection in blood cancer patients

Tuesday June 2nd, 2020 05:05:09 PM
Researchers report on one of the first studies to investigate the outcome of COVID-19 infection in patients with blood cancer.

Scientists find a switch to flip and turn off breast cancer growth and metastasis

Tuesday June 2nd, 2020 05:05:07 PM
Researchers have identified a gene that causes an aggressive form of breast cancer to rapidly grow. More importantly, they have also discovered a way to ''turn it off'' and inhibit cancer from occurring. The animal study results have been so compelling that the team is now working on FDA approval to begin clinical trials.

New model shows how diamond-carrying rocks formed in Northern Alberta

Tuesday June 2nd, 2020 04:52:43 PM
Geologists are proposing a new model for explaining the eruption of diamond-bearing kimberlites in Northern Alberta.

Expression of certain genes may affect vulnerability to post-traumatic stress disorder

Tuesday June 2nd, 2020 04:26:11 PM
A new study suggest that whether certain genes are expressed may play a role in susceptibility to post-traumatic stress disorder (PTSD).

Blood markers predict Humboldt penguin nest type, reproductive success

Tuesday June 2nd, 2020 04:26:06 PM
Researchers looked at metabolic markers in the blood of 30 Humboldt penguins nesting in the Punta San Juan Marine Protected Area in Peru. The scientists discovered metabolic differences between penguins nesting in sheltered burrows and those in more exposed areas. Nesting success is critical to the Humboldt penguins' survival as a species.

Oil platforms' fishy future

Tuesday June 2nd, 2020 04:26:04 PM
Marine biologists forecast the effects of oil platform decommissioning on fish communities.

Climate change could dramatically reduce future US snowstorms

Tuesday June 2nd, 2020 04:26:02 PM
A new study suggests American winters late this century could experience significant decreases in the frequency, intensity and size of snowstorms. Under an unabated greenhouse gas emissions scenario, the study projects 28% fewer snowstorms on average per year over central and eastern portions of North America by the century's last decade.

Bed bug burden in urban neighborhoods

Tuesday June 2nd, 2020 04:26:00 PM
In the first study to use systematically collected data from multifamily housing inspections to track bed bug infestation, investigators confirm what has long been suspected for bed bugs, but also for public health issues in general' -- infestations are strongly associated with socioeconomic factors, including neighborhood income, eviction rates and crowding.

Dead Sea Scrolls 'puzzle' pieced together with DNA

Tuesday June 2nd, 2020 04:25:58 PM
Ancient DNA extracted from Dead Sea Scrolls permits a rare, unanticipated glimpse into world of Second Temple Judaism.

Gene discovery in fruit flies 'opens new doors' for hearing loss cure in elderly

Tuesday June 2nd, 2020 03:43:44 PM
Scientists have discovered sets of regulatory genes, which are responsible for maintaining healthy hearing. The finding, made in fruit flies, could potentially lead to treatments for age-related hearing loss (ARHL) in humans.

Molecular circuitry: International team breaks one-diode-one resistor electronics

Tuesday June 2nd, 2020 03:43:40 PM
An international team has cracked a challenge that could herald a new era of ultra-high-density computing. For years engineers and scientists around the world have been trying to make smaller and faster electronics. Many teams are working on combining the diode and resistor into a single device. An international team of scientists and engineers have now done it.

COVID-19 drug development could benefit from approach used against flu

Tuesday June 2nd, 2020 03:43:38 PM
A new study has found that some antivirals are useful for more than helping sick people get better -- they also can prevent thousands of deaths and hundreds of thousands of virus cases if used in the early stages of infection.

From dark to light in a flash: Smart film lets windows switch autonomously

Tuesday June 2nd, 2020 03:43:34 PM
Researchers have developed a new easy-to-use smart optical film technology that allows smart window devices to autonomously switch between transparent and opaque states in response to the surrounding light conditions.

More efficient biosolar cells modelled on nature

Tuesday June 2nd, 2020 03:01:42 PM
Potential sources of renewable energy include protein complexes that are responsible for photosynthesis. However, their efficiency in technical applications still leaves much to be desired. For example, they cannot convert green light into energy. A research team has successfully closed this so-called green gap by combining a photosynthesis protein complex with a light-collecting protein from cyanobacteria.

On the hunt for megafauna in North America

Tuesday June 2nd, 2020 03:01:40 PM
Research has found that pre-historic climate change does not explain the extinction of megafauna in North America at the end of the last Ice Age.

These flexible feet help robots walk faster

Tuesday June 2nd, 2020 03:01:35 PM
Roboticists have developed flexible feet that can help robots walk up to 40 percent faster on uneven terrain such as pebbles and wood chips. The work has applications for search-and-rescue missions as well as space exploration.

Matching fossil fuel emissions to carbon-14 measurements

Tuesday June 2nd, 2020 03:01:23 PM
Study findings take a dramatic step towards a greenhouse gas information system that can fundamentally change the way cities, states and the nation tackle the climate change problem.

Latest climate models show more intense droughts to come

Tuesday June 2nd, 2020 03:01:21 PM
An analysis of new climate model projections shows southwestern Australia and parts of southern Australia will see longer and more intense droughts due to a lack of rainfall caused by climate change. But Australia is not alone. Across the globe, several important agricultural and forested regions in the Amazon, Mediterranean and southern Africa can expect more frequent and intense rainfall droughts.

Pre-COVID-19 poll of older adults hints at potential impact of pandemic on eating habits

Tuesday June 2nd, 2020 03:01:16 PM
Few shopped for groceries online, and self-rating of healthy eating was higher among those who dined alone or at restaurants least, a new national U.S. poll finds.

A better model for neutrophil-related diseases

Tuesday June 2nd, 2020 03:01:14 PM
Neutrophils are critical immune cells for antimicrobial defense, but they can exacerbate a number of diseases, perhaps including COVID-19. The traditional approaches to study neutrophils in animal models are limited in specificity and effectiveness. Scientists have now identified the problem and have developed a new, optimized model for studying the role of neutrophils in the context of disease.

Bees grooming each other can boost colony immunity

Tuesday June 2nd, 2020 03:01:12 PM
Honeybees that specialise in grooming their nestmates (allogroomers) to ward off pests play a central role in the colony, finds a new UCL and University of Florence study published in Scientific Reports.

Good night? Satellite data uncovers dolphins on the move at nighttime

Tuesday June 2nd, 2020 03:01:11 PM
More than 1,000 bottlenose dolphins live in Florida's Indian River Lagoon year-round. Although extensively studied, what they do at nighttime is still a mystery. Using satellite telemetry, scientists provide the first documentation that these dolphins have a larger range that encompasses more habitats than previously thought. They regularly leave the brackish waters of the estuarine system and, not only travel into the ocean, but swim substantial distances -- up to 20 kilometers -- up freshwater rivers, creeks, and canals.

An important new tool for developing COVID-19 treatments, vaccines

Tuesday June 2nd, 2020 03:01:07 PM
Scientists have a new resource to help them better understand COVID-19 as they develop treatments and vaccines.






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