Add BrightSurf on Google Email

Proceedings of the National Academy of Sciences


Benefits of Bt corn

The widespread adoption of Bt field corn led to significant reductions in European corn borer and corn earworm infestations. This resulted in lower recommended insecticide sprays, total insecticides applied, and crop damages on pepper, green bean, and sweet corn crops.

SourceProceedings of the National Academy of Sciences·JournalProceedings of the National Academy of Sciences·DateMar 12, 2018

Infants' expectation of ingroup support and fairness

In a series of experiments, researchers found that infants prioritize ingroup support over fairness when resources are limited. The study involved 72 participants aged 18-20 months and 48 participants aged 25-33 months, who observed resource-allocation events involving a puppet distributor and two potential recipients.

SourceProceedings of the National Academy of Sciences·JournalProceedings of the National Academy of Sciences·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

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

Invasive species source pools

The study analyzed nearly 46,000 records of alien species from 1500-2005, finding that a substantial proportion of newly recorded species had not been previously reported elsewhere. This suggests that access to new potential alien species has increased over time, contributing to the global rise in emerging alien species.

SourceProceedings of the National Academy of Sciences·JournalProceedings of the National Academy of Sciences·DateFeb 5, 2018

Assessment of Legionnaires' disease outbreak in Flint

A study examined the relationship between free chlorine concentrations and the 2014-2015 Legionnaires' disease (LD) outbreak in Flint, Michigan. The results indicate that decreasing concentrations of free chlorine in the water were associated with increased risk of developing LD, with a 80% increase per 1 mg/L decrease.

SourceProceedings of the National Academy of Sciences·JournalProceedings of the National Academy of Sciences·DateFeb 5, 2018

Classification of tropical forests

Researchers used phylogenetic analysis to classify tropical forests into two major regions: an American-African combined region and an Indo-Pacific region. The study also identified a dry region encompassing areas in America, Africa, India, and Madagascar, as well as a subtropical region with parts of America and Asia.

SourceProceedings of the National Academy of Sciences·JournalProceedings of the National Academy of Sciences·DateFeb 5, 2018

How centipedes slay giant prey

A golden head centipede can subdue a caged mouse in under 30 seconds by injecting an estimated 30 μl of crude venom containing SsTx. The peptide toxin strongly inhibits KCNQ4 channels, controlling pulmonary vascular tone and arterial tension, leading to vasoconstriction and cardiovascular effects.

SourceProceedings of the National Academy of Sciences·JournalProceedings of the National Academy of Sciences·DateJan 22, 2018