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75 articles from PhysOrg

Study offers new approach to conduct large-scale protection assessments of Marine Protected Areas (MPAs)

A new study offers a science-based method to assess protection levels in marine protected areas (MPAs) when information on regulated human activities is limited. The study, recently published in the journal Marine Policy, provides a new technique to inform progress towards international conservation goals, including protecting 30 percent of marine areas by 2030, which was adopted in Dec. 2022 at...

Lunaemycin, a new antibiotic extracted from moonmilk deposits

A study conducted by scientists from the University of Liège and the HEDERA-22 spin-off on moon milk—a mineral deposit found in caves and used for its curative properties—has led to the discovery of a cryptic compound active against bacteria that are multi-resistant to antibiotics. This discovery is the subject of a technology transfer and a publication in the International Journal of...

Research team establishes cell lines to improve iPSC research

Induced Pluripotent Stem Cell (iPSC) lines have become essential for determining the underlying genetic drivers of human disease. Genomes of iPSCs can be easily edited using the bacteria-based CRISPR/Cas9 technology to introduce or correct disease-associated variants.

Water pores in leaves proven to be part of plant's defense system against pathogens

How do plants defend themselves against pathogenic microorganisms? This is a complex puzzle, of which a team of biologists from the University of Amsterdam has solved a new piece. The team, led by Harrold van den Burg, discovered that while the water pores (hydathodes) in leaves provide an entry point for bacteria, they are also an active part of the defense against these invaders. The team's...

Team identifies a nutrient that cancer cells crave

Arginine is an amino acid naturally produced by our bodies and plentiful in the fish, meat, and nuts that we eat. But as recent research in Science Advances reveals, arginine is an essential nutrient for cancer cells too. And starving them of it could potentially render tumors more vulnerable to the body's natural immune response.

Astronomers detect a second planet orbiting two stars

Planets orbiting binary stars are in a tough situation: They have to contend with the gravitational pull of two separate stars. Planetary formation around a single star like our sun is relatively straightforward compared to what circumbinary planets go through. Until recently, astronomers weren't sure they existed.

Anti-Black bias can persist despite kids' tendency to favor same-gender peers

Children as young as five can display more positive associations with white children over Black children on measures of unconscious bias, and new research from York University finds this can be true even when taking into consideration kids' tendencies to favor same-gender peers. Taking an own-gender lens does, however, increase positive associations toward Black children, pointing to both the...

Browsing herbivores increase savanna resilience to droughts, study finds

Extreme climate events pose an ever-increasing threat to savannas around the world. However, the ability of these mixed woodland-grassland ecosystems to resist periods of drought can be improved with a higher number of browsing herbivores—i.e., animals such as kudus, springboks, and common elands that feed on woody vegetation. These help increase the amount of plant diversity and thus the...

Tracing the evolution of wheat spikes since the Neolithic revolution

About 12,000 years ago, the Neolithic revolution radically changed the economy, diet and structure of the first human societies in the Fertile Crescent of the Near East. With the beginning of the cultivation of cereals, such as wheat and barley, and the domestication of animals, the first cities emerged in a new social context marked by a productive economy.

Biologists discover the first fossil species of mountain ants in Baltic amber

St Petersburg University scientists found an ant of the genus Manica in a piece of amber in collection of the Kaliningrad Amber Museum. Such ants had previously been found only in the mountains of Europe, the Caucasus, North America, and Japan. The scientists report that the age of the finding is about 33.9–37.8 million years. This is the most ancient and first known fossil species of this...