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Science News for May 30, 2016


Gels go drugs

Physicists at Lomonosov Moscow State University propose a theoretical model for analyzing the conformational behavior of hydrophobically modified polymer gels in solution. The model explains experimentally observed phenomena and reveals new ways to control gel susceptibility, promising applications in drug delivery systems.

SourceLomonosov Moscow State University·JournalThe Journal of Chemical Physics·DateMay 30, 2016

USF researchers find spatial scale changes ecological processes driving disease

Researchers found that human activities drive disease distributions at local scales for diseases like West Nile virus and Lyme disease, while climate change impacts regional scales. The study highlights the importance of considering multiple spatial scales to understand human ecological impacts on biodiversity and disease emergence.

SourceUniversity of South Florida·JournalProceedings of the National Academy of Sciences·DateMay 30, 2016

Fish courtship pheromone uses the brain's smell pathway

Researchers discovered that a molecule involved in fish reproduction, PGF2α, activates the brain via the nose, synchronizing reproductive behaviors between male and female zebrafish. The molecule binds to specific olfactory receptors, activating a dedicated neural pathway to areas of the brain responsible for courtship behavior.

SourceRIKEN·JournalNature Neuroscience·DateMay 30, 2016

Rice and mung beans as archaeological sources

Researchers analyzed crop remains from ancient sites in Madagascar and found a stark contrast between Eastern African and Asian crops. The findings suggest that Southeast Asians brought crops from their homeland to Madagascar, providing insights into the colonization process.

SourceMax-Planck-Gesellschaft·JournalProceedings of the National Academy of Sciences·DateMay 30, 2016

Google searches for 'chickenpox' reveal big impact of vaccinations

A University of Michigan-led study analyzing Google Trends data found a significant reduction in chickenpox searches following vaccination implementation in countries like Germany. The study demonstrates the effectiveness of immunization in reducing seasonal outbreaks and offers a novel way to track global childhood disease burdens.

SourceUniversity of Michigan·JournalProceedings of the National Academy of Sciences·DateMay 30, 2016

The brain clock that keeps memories ticking

Research from RIKEN Brain Science Institute in Japan identifies the brain clock that keeps memories organized across time. Without CA3 input, the neural orchestra loses its conductor, leading to errors in representing space and impairing accurate prediction of spatial location.

SourceRIKEN·JournalNature Neuroscience·DateMay 30, 2016

Seeing 'living' nanofibers in real time

Researchers at Kyoto University have observed artificial nanofibers sorting themselves into organized structures under artificial conditions, a phenomenon similar to that seen in living cells. This achievement elucidates the mechanism of self-sorting and has potential applications in developing intelligent biomimics.

SourceKyoto University·JournalNature Chemistry·DateMay 30, 2016

Increased marrying, and mating, by education level not affecting genetic make-up

A study by NYU sociologist Dalton Conley found that while spouses are sorting themselves by education, it has no significant impact on the genetic makeup of subsequent generations. The research analyzed data from over 2,000 spousal pairs and found no notable trends in spousal similarity or fertility related to education-associated gene...

SourceNew York University·JournalProceedings of the National Academy of Sciences·DateMay 30, 2016

Effects of maternal smoking continue long after birth

A new study found that early exposure to nicotine can trigger genetic changes affecting brain cell connections, leading to attention deficit hyperactivity disorder and other behavioral problems. Maternal smoking has been linked to these conditions, and the study provides a possible explanation for its long-term effects.

SourceYale University·JournalNature Neuroscience·DateMay 30, 2016

Weed stems ripe for biofuel

Researchers have identified a type of wild sorghum, known as Arun, which yields significantly more bioethanol than other varieties. The plant's stems contain high levels of a component thought to inhibit bioethanol production, but a high level of easily fermentable sugar negates this effect.

SourceUniversity of Adelaide·JournalPLOS ONE·DateMay 30, 2016

'Dirty Blizzard' sent 2010 Gulf oil spill pollution to seafloor

A new study found that contaminants from the Deepwater Horizon oil spill persisted in the subsurface water for months, eventually accumulating on the seafloor as a 'dirty blizzard' of marine debris. The remnants of oil and drilling mud combined with microscopic algae to descend to great depths, affecting deep-sea fish and corals.

SourceColumbia Climate School·JournalProceedings of the National Academy of Sciences·DateMay 30, 2016