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Science News Archive 2018 - Page 407


Page 407 of 473

Stormy weather

Researchers found a unique deposit in upper meter of marsh sediments, suggesting the 1861-62 storm season was erosive enough to remove coastal barriers. The team used sediment cores and analyzed European crop pollen and spheroidal carbonaceous particles to confirm the deposit's age.

SourceUniversity of California - Santa Barbara·JournalMarine Geology·DateFeb 26, 2018

Human activity and late Holocene rainforests

Researchers found evidence of early human impacts on African rainforests, with a switch from mature rainforest to forest-savannah mosaic occurring around 3,000 years ago. Human population growth and land-use changes are thought to have driven this transition, contradicting the current consensus that climate change was the primary cause.

SourceProceedings of the National Academy of Sciences·JournalProceedings of the National Academy of Sciences·DateFeb 26, 2018

Improving the quality of high altitude medicine

The new guidelines aim to standardize data capture in high altitude research, enabling researchers to replicate studies and compare findings. The guidelines provide a structured approach for collecting data on factors such as local conditions, study participants' characteristics, and medical history.

SourceEurac Research·JournalHigh Altitude Medicine & Biology·DateFeb 26, 2018

Life under extreme drought conditions

Researchers have discovered an active microbial community in the Atacama Desert's most arid zones, which becomes metabolically active following periodic moisture increases. The findings have implications for the search for life on Mars, suggesting that past conditions may have supported life that could endure hyper-arid environments.

SourceGFZ GeoForschungsZentrum Potsdam, Helmholtz Centre·JournalProceedings of the National Academy of Sciences·DateFeb 26, 2018

Scientists move closer to treatment for Huntington's disease

Researchers have developed a safer and more specific CRISPR/Cas9 system to treat Huntington's disease, a neurodegenerative disorder caused by a defective gene. The new technique successfully inactivates the mutant gene and reduces toxic protein synthesis, offering hope for a potential cure.

SourceFrontiers·JournalFrontiers in Neuroscience·DateFeb 26, 2018

Mom's immune system shapes baby's brain

A study published in JNeurosci found that a woman's immune system during pregnancy influences the development of her child's brain network, which may be linked to psychiatric disorders such as autism and schizophrenia. Higher maternal immune activation was also associated with improved cognitive ability in infants.

Rice U. sleuths find metal in 'metal-free' catalysts

Researchers at Rice University have found that graphene catalysts contain trace amounts of manganese, which activates the oxygen reduction reaction and improves fuel-cell efficiency. The study used inductively coupled plasma mass spectrometry to detect manganese atoms in samples made by the Rice lab.

SourceRice University·JournalCarbon·DateFeb 26, 2018

ACP calls on doctors to practice what they teach

The American College of Physicians recommends reinforcing formal curricula with hidden cultural lessons in medical education. This includes modeling empathy, encouraging reflection, and promoting learner and clinician wellness. The goal is to align positive hidden curricula with formal curricula and foster respect, inquiry, and honesty.

SourceAmerican College of Physicians·JournalAnnals of Internal Medicine·DateFeb 26, 2018

Mechanism of diamond formation

Researchers discovered diamond formation from ankerite through spontaneous iron reduction, suggesting a possible mechanism for abundant diamond creation in Earth's lower mantle. The process occurs without melting at high pressures and temperatures, similar to those found in meteoritic impact zones.

SourceProceedings of the National Academy of Sciences·JournalProceedings of the National Academy of Sciences·DateFeb 26, 2018

Humans changed the ecosystems of Central Africa more than 2,600 years ago

A team of scientists discovered that humans triggered the transformation of dense forests to savannahs in Central Africa around 2,600 years ago. The sudden change, known as the 'rainforest crisis,' was not caused by climate change but rather by human activities such as agriculture and population growth.

SourceGFZ GeoForschungsZentrum Potsdam, Helmholtz Centre·JournalProceedings of the National Academy of Sciences·DateFeb 26, 2018

Daffodils to fight against cancer

Researchers discovered that a natural alkaloid extracted from Daffodils, called haemanthamine, blocks the production of proteins by ribosomes in cancer cells, leading to their elimination. The study provides a molecular explanation for the anti-tumoral activity of Daffodils used in folk medicine.

SourceUniversité libre de Bruxelles·JournalStructure·DateFeb 26, 2018

Watch fat cells help heal a wound in a fly

Researchers found that fat body cells in Drosophila propel themselves forward towards wounds using a wave-like motion, effectively sealing them and preventing infection. The cells work together with immune cells to aid healing and increase antimicrobial peptide production.

SourceCell Press·JournalDevelopmental Cell·DateFeb 26, 2018

Clever coating opens door to smart windows

Researchers at RMIT University developed an ultra-thin coating that automatically regulates temperature in buildings, reducing energy consumption and emissions. The self-modifying coating can block heat during summer and retain heat inside when it's cold, leading to significant environmental benefits and financial savings.

SourceRMIT University·JournalScientific Reports·DateFeb 25, 2018