Latest science news, discoveries and scientific developments.
Five natural compounds, including curcumin and berberine, were tested for their effects on cancer cells and healthy muscle cells. All disrupted cancer cell energy production and pushed many of the cells into a non-dividing state, with curcumin producing the strongest overall effect. Curcumin also showed a relatively favorable safety profile, while some other compounds caused more toxicity.
A leading U.S. beef industry trade association knew by 1989 that cattle contributed to global warming but focused its response on protecting consumer demand through public relations, according to a new study that examined a decade of industry records.
Biodiversity indicators can help companies make more sustainable decisions. But only 9% of the world's largest companies in sectors with a major impact on biodiversity use such indicators, according to a new study from Lund University. The researchers also show that different indicators can lead to different conclusions and present seven recommendations for how they should be used.
Many insects see the world through hundreds of tiny lenses that are grouped together in a visual organ known as the compound eye. Behind each lens sits a cluster of eight light-detecting cells arranged in a pattern that scientists believe has existed for hundreds of millions of years.
For decades, scientists have believed that a protein called interferon tau (IFNT) is indispensable for pregnancy in cattle. Produced by the early embryo, it was thought to signal its presence to the mother and prevent the hormonal changes that would otherwise end the pregnancy.
A breakdown of normal polar winds in winter raises the chance of extreme cold—and a resulting spike in energy demand—in Europe, new research shows. Normally, strong and stable westerly winds circle high above the Arctic in the winter, in what is known as the "stratospheric polar vortex."
A new paper published in the journal Phytotaxa describes a new species in the genus Victoria, the Colombian giant water lily (Victoria colombiana). With only three other known species in the genus, V. colombiana joins the pantheon of nature's giants with pads measuring up to 2 meters (6.6 feet) across.
Bees, moths and other pollinating insects have a harder time smelling flowers in polluted air, according to research led by the University of Reading. Scientists analyzed 22 experimental studies on how the air pollutants ozone and nitrogen oxides (NOx) affect pollinators. Both pollutants make it harder for pollinators to find flowers by breaking down or altering the scents that flowers give off.
There is a strong national and international commitment to large-scale carbon removal from the atmosphere (Carbon Dioxide Removal, CDR) to achieve climate goals. But how do you do that responsibly? A study commissioned by the Climate Research Initiative Netherlands (KIN) and led by the University of Twente shows which ecological and social effects and preconditions must be taken into account.
Victoria colombiana, a species of giant waterlilly now identified as a new speciesCarlos Magdalena Giant waterlilies are not exactly inconspicuous plants. But in the past few years, we have discovered no fewer than three new species, taking the total to five. The latest species to be described was identified with the help of social media, satellite photos and a mad jungle dash in the dark. “I think it’s incredible that we find something so new, which is so large, in this world where we think everything is already known,” says Maarten Christenhusz at the Botanical Society of Britain and Ireland, who has helped describe two of the new species. Read more Why rediscovering extinct species can ac...
Just two weeks after it was launched, the Copernicus Sentinel-3C satellite returned its first images and measurements from two of its key instruments—a major milestone that confirms the satellite is working well and on track to monitor the health of Earth's oceans, land, cryosphere and atmosphere.
Walk through almost any city or town in a low-income or middle-income country and you'll pass them: the woman selling deep-fried fish from a cart, the mobile vendor with a bicycle full of vegetables, the kiosk operator who's the only source of a hot meal within walking distance. Food systems employ an estimated 1.23 billion people globally, and a majority of those jobs are informal—unlicensed, unregistered or otherwise outside the reach of formal regulation. In low-income and middle-income countries (LMICs) especially, informal vendors are not a marginal feature of how people eat; they are a linchpin of food security and livelihoods for over a billion people.
A prehistoric cold case near Drumheller reveals either a small-time raptor scavenged on an apex predator, or a baby Albertosaurus engaged in a shocking act of cannibalism. These two possible explanations for what happened to an Albertosaurus after its death near Drumheller are wildly divergent.
Research published in the International Journal of Business Innovation and Research (IJBIR) suggests that African economies need to move beyond fragmented development strategies. This might be done by uniting digital technology, startup networks, resource processing and cross-sector partnerships into a single societal innovation ecosystem, the researchers explain.
The DNA in our cells wraps around proteins called histones to form nucleosomes, which organize into chromatin. This organization helps pack genetic material into the nucleus and influences how easily genes can be read and DNA damage repaired. Understanding how chromatin changes requires studying molecular movements and interactions that are difficult to capture experimentally.
Nickel is a promising, cost-effective and robust catalyst for alkaline water electrolysis—a key technology for the climate-neutral production of hydrogen. However, the actual structure of the active surface of such nickel electrodes under reaction conditions had not yet been conclusively determined. A research team at Ulm University has now refuted a decades-old assumption: The catalytically active surface does not consist of nickel oxyhydroxide (NiOOH), as was previously widely assumed, but is nickel dioxide (NiO₂). The findings have been published in the journal Nature Catalysis.
My ancestral languages, Boarisch (Bavarian) and Schwäbisch (Swabian), are routinely described as German dialects. That might sound like a technical linguistic distinction. For me, a Boarisch-Schwob scholar and community member, it raises a practical question: What happens to a people when their ancestral language, which carries their identity and "Weltanschauung" (worldview), is excluded from protection under a European language treaty because the modern state and dominant culture reduce it to a dialect?
Great Danes and mastiffs rarely live more than a decade, while Chihuahuas can live twice as long. Exactly why big dogs die younger than small ones do has been unclear — but new findings may help to solve that mystery.The research, published Thursday (Oct. 8) in the journal Science, looked at a chemical code written on top of dogs' DNA. This code, called the methylome, consists of chemical tags called methyl groups, which bind to DNA's building blocks. Proteins constantly access DNA, loading up the information written in its code and taking that data away to be turned into new proteins for the cell. But these methyl groups can act as tiny roadblocks that stop that process in its tracks. These...
In a study led by Tampere University, researchers have developed a new lensless imaging method that produces precise quantitative data on living cells from a single image. The compact system can be placed inside a standard cell-culture incubator, allowing living cells to be monitored continuously for hours or even days without staining or other labels. The research is published in the journal Applied Physics Letters.
In high-latitude coastal areas, Arctic amplification means that temperatures are rising faster than the global average. This combination of rising temperatures and changing precipitation patterns driven by the North Atlantic Oscillation has major impacts on regions with a "cryosphere"—areas that host ice sheets and glaciers, such as southern Greenland.