937,398 articles

Hiring ban disrupts research at Florida universities

When Zhengfei Guan, an agricultural economist at the University of Florida (UF), advertised for a new postdoc last summer, one applicant from China quickly rose to the top of the pile. But after being offered the job, the young scholar decided he didn’t want to work in Florida. His change of heart was triggered by a new Florida law prohibiting the state’s 12...

Theories that explain the crisis in democracy are inadequate for Latin America, experts say

The theories offered by the dominant literature in political science today to try to explain the sources of the political polarization that has endangered democracy around the world are adequate for the United States and Europe, but do not make sense for the countries of Latin America. For this reason, greater collaboration among political scientists is needed to identify other, more plausible...

Allowing consumers who purchased goods online to return them to retail stores can be a win-win

Many consumers who shop online prefer to return items to brick-and-mortar stores rather than mail them back. In a new study, researchers assessed a new practice called return partnership, in which online retailers partner with retailers with physical stores to offer offline returns. They conclude that this arrangement can benefit both online and store retailers, though businesses should be careful...

Designing a cost-effective X-ray free electron lasers facility

Many advances in structural science since the 1970s were made by probing materials with synchrotron radiation: that is, high energy X-rays generated through accelerating high-energy electrons. The latest generation of such sources, X-ray free electron lasers (XFEL), are far more powerful than their predecessors but are only accessible to international consortia and a few rich countries because of...

Problems with 3 Body Problem? Experts discuss physics, mathematics behind hit Netflix show

The science fiction television series 3 Body Problem, the latest from the creators of HBO's Game of Thrones, has become the most watched show on Netflix since its debut last month. Based on the bestselling book trilogy Remembrance of Earth's Past by Chinese computer engineer and author Cixin Liu, 3 Body Problem introduces viewers to advanced concepts in physics in service to a suspenseful story...

A galaxy’s bright flicker turned out to be two black holes dancing in the night

Just a few years ago, in a galaxy 848 million light-years away, astronomers witnessed something strange happen. The supermassive black hole (SMBH) at the center of this galaxy was chugging along just fine, steadily gobbling up matter that fell into it. But in December 2020, the galaxy suddenly flared up as it feasted on aContinue reading "A galaxy’s bright flicker turned out to be two black...

Searching for new asymmetry between matter and antimatter

Once a particle of matter, always a particle of matter. Or not. Thanks to a quirk of quantum physics, four known particles made up of two different quarks—such as the electrically neutral D meson composed of a charm quark and an up antiquark—can spontaneously oscillate into their antimatter partners and vice versa.

More Than a Trillion Cicadas Are Coming. Are You Ready?

Cicadas spend the vast majority of their lifetime—more than 90%—underground. But this spring, two broods of more than a trillion cicadas will make their debut above the soil across the Midwest and Southeast in an event that has not happened in more than two centuries.  “When these emerge, it really is a unique, natural phenomenon,” says PJ Liesch, the...

Study finds link between ecosystem multifunctionality and microbial community features

Ecosystem multifunctionality (EMF) is the ability of an ecosystem to provide multiple functions simultaneously. Microorganisms are proxies for soil communities and possess diverse functional traits that support multiple ecosystem functions. However, the complex relationships between the microbial network and EMF, especially at a large spatial scale, remain largely unknown.

A model to promote the coordination between environmental protection and agricultural development in Erhai Lake

Erhai Lake, covering 252 km2, located in Yunnan Province, is one of the seven largest freshwater lakes in China. However, over the last three decades, the lake has suffered pollution episodes. In order to solve this problem, the local government has taken many protective measures. These measures have achieved some results in the environmental protection of Erhai Lake, but also caused significant...

Brightest gamma ray burst of all time emerged from collapsing star

A burst of gamma rays more than 10 times brighter than any detected before struck Earth in October 2022, searing the atmosphere , wowing astronomers, and earning the nickname of the BOAT—the brightest of all time. Now, astronomers using NASA’s JWST orbiting observatory have identified the source of the blast—and stumbled on a new puzzle. As theorists...

Study uncovers the role of soil microbes in forest ecosystems

Assessing the function of forest ecosystems requires a deep understanding of the mechanisms of soil nitrogen mineralization. A study conducted by a team of researchers has shed light on how soil N-cycling genes drive soil nitrogen mineralization during afforestation.

AI is giving boost to crop improvement research

What is the role of artificial intelligence for crop improvement? Questions about artificial intelligence are becoming more pressing in every discipline. For crop improvement, AI provides a new lens to bridge science and practice, according to Jianming Yu, one of the world's top-ranked scientists in the fields of quantitative genetics and plant breeding.

Decoding the language of cells: Profiling the proteins behind cellular organelle communication

In cellular biology, unraveling the complexities of cellular function at the molecular level remains a paramount endeavor. Significant scientific focus has been placed on understanding the interactions at organelle contact sites, especially between mitochondria and the endoplasmic reticulum (ER). These sites are critical hubs for the exchange of essential biomolecules, such as lipids and calcium,...

Melanomas resist drugs by 'breaking' genes

A study has disentangled the mechanisms behind one of the ways melanoma cancer cells develop resistance to treatment. The study found that, in response to some drugs, melanomas can 'break' parts of their BRAF gene, which is mutated in 1 in 2 melanomas. This helps the tumor create alternative versions of the protein which lack regions targeted by one BRAF inhibitors, one of the main drugs used to...

Africa's iconic flamingos threatened by rising lake levels

It is one of the world's most spectacular sights -- huge flocks or 'flamboyances' of flamingos around East Africa's lakes -- as seen in the film Out of Africa or David Attenborough's A Perfect Planet. But new research has revealed how the lesser flamingo is at danger of being flushed out of its historic feeding grounds, with serious consequences for the future of the species.