Earth

A new Portland State University study shows that even though water quality has improved in South Korea's Han River basin since the 1990s, there are still higher-than-acceptable levels of pollutants in some of the more urbanized regions in and around the capital Seoul.

The study by Heejun Chang, a geography professor in PSU's College of Liberal Arts and Sciences, and Janardan Mainali, a Ph.D. student in geography, was published online in the Journal of Hydrology in June. It was supported by a grant from the National Science Foundation.

Glenview, IL, July 12, 2018 - Some patients with COPD demonstrate signs of accelerated aging. In a new study published in the journal CHEST® researchers report that measuring blood telomeres, a marker of aging of cells, can be used to predict future risk of the disease worsening or death.

Sea-level rise will endanger valuable salt marshes across the United Kingdom by 2100 if greenhouse gas emissions continue unabated, according to an international study co-authored by a Rutgers University-New Brunswick professor.

Moreover, salt marshes in southern and eastern England face a high risk of loss by 2040, according to the study published in Nature Communications.

The study is the first to estimate salt-marsh vulnerability using the geological record of past losses in response to sea-level change.

MISSOULA - The corridors of land vital for many wildlife species in the face of climate change often are unprotected. Now, a recently published study from a University of Montana ecology professor and other researchers has tracked these shifting North American habitats.

ROCKVILLE, MARYLAND (JULY 11, 2018) --Aeras, a nonprofit organization dedicated to developing vaccines against tuberculosis (TB), today announced the publication of the full results from a Phase 2, randomized, controlled clinical trial of two TB vaccines-- the currently available BCG vaccine and an investigational vaccine, H4:IC31--in the New England Journal of Medicine (NEJM).

People who eat a healthy diet experience fewer asthma symptoms and better control of their condition, according to a new study published in the European Respiratory Journal [1].

Diets with better asthma outcomes are characterised by being healthier, with greater consumption of fruits, vegetables and whole grain cereals. Unhealthy diets, with high consumption of meat, salt and sugar, have the poorest outcomes.

For more than 20 years, conservationists have been working to protect one of the most recognizable reef fish in the Caribbean, the endangered and iconic Nassau grouper, and thanks to those efforts, populations of this critical reef fish have stabilized in some areas. But in a new paper, published in the journal Diversity and Distributions, marine scientists said climate change might severely hinder those efforts by the end of this century.

Japan -- Scientists report that a large, extinct seabird called the spectacled cormorant, Phalacrocorax perspicillatus -- originally thought to be restricted to Bering Island, far to the north -- also resided in Japan nearly 120,000 years ago.

Writing in The Auk Ornithological Advances, the team indicates that the species under-went a drastic range contraction or shift, and that specimens found on Bering Island are 'relicts' -- remnants of a species that was once more widespread.

Understanding what environmental cues birds use to time their annual migrations and decide where to settle is crucial for predicting how they'll be affected by a shifting climate. A new study from The Auk: Ornithological Advances shows that for two species of flycatcher, one of the key factors is rain--the more precipitation an area receives, the more likely the birds are to be there during the non-breeding season.

A study published in The Condor: Ornithological Applications presents a case study on how bird surveys can better inform conservation and vegetation restoration efforts. Previous conservation methods have emphasized plants as the key to recreating habitat preferred by a sensitive animal. However, this study shows that there's more to the coastal sagebrush habitat of California Gnatcatchers than just having the right plants present.