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Science News for November 15, 2019


Hot electrons harvested without tricks

Scientists have found a way to harness excess energy from photons that are too energetic for materials to absorb, potentially increasing the efficiency of solar panels. By combining a perovskite with an acceptor material, hot electrons can be readily absorbed, even without slowing down their loss of energy.

SourceUniversity of Groningen·JournalScience Advances·DateNov 15, 2019

EurekAlert! fellowship spotlights early-career science journalists from Latin America, other emerging regions

The 2020 EurekAlert! Fellowships for International Science Reporters will support five early-career science journalists from Latin America, China, and other emerging regions attending the 2020 AAAS Annual Meeting. The program aims to highlight regional scientific contributions and promote quality science journalism.

A marvelous molecular machine

Scientists discovered that reflectin proteins control iridocytes, which contribute to changing visibility and appearance. The proteins fold up when phosphate groups are added, exposing sticky surfaces that allow them to clump together, creating an osmotic motor that responds to neuronal signals.

SourceUniversity of California - Santa Barbara·JournalJournal of Biological Chemistry·DateNov 15, 2019

Nudge increases cancer screening orders, but patient-facing nudge needed, too

A new study from the University of Pennsylvania School of Medicine found that implementing an electronic health record nudge increased cancer screening orders by 22% and 14%, respectively. However, the study also showed that patients' follow-through on screenings remained largely unchanged. The researchers suggest that future intervent...

SourceUniversity of Pennsylvania School of Medicine·JournalJAMA Network Open·DateNov 15, 2019

Ketogenic diet helps tame flu virus

A new study from Yale University finds that a ketogenic diet can enhance the body's natural response to influenza by activating gamma delta T cells, which produce mucus in lung cell linings. The research suggests that the way the body burns fat may fuel the immune system's ability to fight flu infection.

SourceYale University·JournalScience Immunology·DateNov 15, 2019

How nematodes outsmart the defenses of pests

Researchers found that nematodes from infested areas are resistant to benzoxazinoids, a defense substance stored in maize roots. This resistance allows the nematodes to become immune to self-defense mechanisms used by the pests, enabling them to continue controlling pest populations effectively.

SourceUniversity of Bern·JournalProceedings of the National Academy of Sciences·DateNov 15, 2019

Volcanoes under pressure

Scientists from Technical University of Munich found that the plug dome's permeability drops significantly as stone alteration increases, leading to an imminent eruption. This discovery enables more reliable prediction of volcanic eruptions, with reduced outgassing being a key indicator of an impending event.

SourceTechnical University of Munich (TUM)·JournalNature Communications·DateNov 15, 2019

Lichens are way younger than scientists thought

Lichens are now known to have evolved millions of years after complex plants, contradicting the long-held theory that they were among the first organisms to colonize land. This new understanding sheds light on the early evolution of ecosystems and the role of lichens in shaping the environment.

SourceField Museum·JournalGeobiology·DateNov 15, 2019

Life experience critical for managing Type 2 diabetes

A study by Carnegie Mellon University found that age affects the well-being of newly diagnosed Type 2 diabetes patients. Younger individuals experience higher diabetes-related and psychological stress. Older adults tend to have less psychological stress and better self-care, blood sugar control, and medication adherence.

SourceCarnegie Mellon University·JournalJournal of Behavioral Medicine·DateNov 15, 2019

How to build a chloroplast

A team of researchers from Japan and the UK has identified a crucial communication route in developing chloroplasts, the energy factories of plant cells. The newly characterized protein GUN1 regulates tetrapyrrole biosynthesis, controlling the cell's production of heme.

SourceUniversity of Tokyo·JournalProceedings of the National Academy of Sciences·DateNov 15, 2019