More USA & Canada News – Page 34
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NewsSulfate-reducing bacteria drive elevated levels of mercury in Colorado mountain wetlands
Climate change is melting glaciers and permafrost in mountains, freeing up minerals containing sulfate to flow downstream into local watersheds. Elevated sulfate levels can increase methylmercury, a potent neurotoxin that accumulates up the food chain.
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NewsLight-to-electricity nanodevice reveals how Earth’s oldest surviving cyanobacteria worked
An international team of scientists have unlocked a key piece of Earth’s evolutionary puzzle by decoding the structure of a light-harvesting “nanodevice” in one of the planet’s most ancient lineages of cyanobacteria.
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NewsVicious cycle: How methane emissions from warming wetlands could exacerbate climate change
Warming in the Arctic is intensifying methane emissions, contributing to a vicious feedback loop that could accelerate climate change even more, according to a new study.
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NewsAmericans say benefits of MMR vaccine for children outweigh risks by nearly 5-1
While many Americans know how measles can spread, most cannot accurately estimate the prevalence of complications associated with measles such as hospitalization or the risks it presents during pregnancy, according to a new survey.
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NewsResearchers find CRISPR is capable of even more than we thought
Researchers studying key immune components of some CRISPR systems have announced the newest CARF effector they’ve discovered, which they coined Cat1 - it can deplete a metabolite essential for cellular function.
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NewsParticles carrying multiple vaccine doses could reduce the need for follow-up shots
Researchers are working to develop microparticles that can release their payload weeks or months after being injected. This could lead to vaccines that can be given just once, with several doses that would be released at different time points.
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NewsTwo HIV vaccine trials show proof of concept for pathway to broadly neutralizing antibodies
A new study combining data from two separate phase 1 clinical trials shows that a targeted vaccine strategy can successfully activate early immune responses relevant to HIV, and, in one trial, further advance them.
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NewsScientists find two brain biomarkers in long COVID sufferers may be what’s causing brain fog
A new study that compares inflammation and brain stress responses in long COVID-19 patients with individuals who have fully recovered shows those with cognitive issues have a lower ability to adapt to stress and higher levels of inflammation in their brains.
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NewsCombining laboratory techniques yields wealth of information about deadly brain tumors
In a new study, researchers injected into the tumor a virus aimed at killing glioblastoma cells. Surgeons took tumor tissue samples and ran them through multiple advanced laboratory techniques to demonstrate that even small tissue samples can yield additional insights.
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NewsScientists develop an ink that boosts coral reef settlement by 20 times
With coral reefs in crisis due to climate change, scientists have engineered a bio-ink that could help promote coral larvae settlement and restore these underwater ecosystems before it’s too late.
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News‘Loop’hole: HIV-1 hijacks human immune cells using circular RNAs
In a groundbreaking discovery, researchers have identified a never-before-seen mechanism that enables the human immunodeficiency type 1 virus (HIV-1) to evade the body’s natural defenses and use it to support its survival and replication.
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NewsTo restore gut health, a healthy diet outperforms fecal transplants
When our microbial ranks are damaged or depleted — whether by inflammatory bowel diseases, antibiotic regimens or bone marrow transplants — it is crucial to restore them. According to a new study, the most effective way of rebuilding the microbiome is also the simplest: maintaining a healthy diet.
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NewsNew study offers insights into designing safe, effective nasal vaccines
Researchers found that nasal vaccine boosters can trigger strong immune defenses in the respiratory tract, even without the help of immune-boosting ingredients known as adjuvants. The findings, researchers suggest, may offer critical insights into developing safer, more effective nasal vaccines in the future.
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NewsTough microbes found in NASA cleanrooms hold clues to space survival and biotech
A new study involving AMI member Professor Alexandre Rosado has reported 26 novel bacterial species growing inside cleanrooms associated with NASA space missions. They carry genetic traits associated with resilience to extreme environments.
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NewsWily parasite kills human cells and wears their remains as disguise
The single-celled parasite Entamoeba histolytica gains resistance to the human immune system by ingesting proteins from the outer membranes of human cells and placing them on its own outer surface, a new study finds.
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NewsMeasles virus detected in Houston wastewater before cases were reported
An innovative outbreak detection program that tracks disease-causing viruses in wastewater identified the measles virus in Houston samples collected in early January 2025, before cases were reported.
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NewsViruses that kill toxic algae may increase risks for people and ecosystems
New laboratory research shows that when viruses attack a species that forms toxic algal blooms, those thick, blue-green slicks that choke waterways and that threaten ecosystems, drinking water, and public health, what results might be even worse than before the infection.
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NewsNew vaccine protects against swine, human and bird flu
Annual flu shots could become a thing of the past under a new vaccine strategy. A new study describes a vaccine that protects against H1N1 swine flu and can also protect against influenza in humans and birds.
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NewsTargeted nanoparticles show promise for more effective antifungal treatments
Researchers have developed a new nanotechnology-based approach that could improve treatment of fungal infections, particularly those caused by the increasingly drug-resistant Candida species.
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NewsStudy uncovers how the plastisphere can influence growth of harmful algal blooms
A new study published in Sustainable Microbiology delves into how the age and size of microplastics affects the growth of harmful algal blooms.