Bacteria’s shapeshifting behavior clue to new treatments for urinary tract infections

Urinary tract infections are both very common and potentially very dangerous. Around 80 per cent of UTIs are caused by uropathogenic E. coli (UPEC), which is increasingly resistant to antibiotics. E. coli-related death due to antimicrobial resistance is the leading cause of bacterial fatalities worldwide. New research examining bacterial behavior over the infection cycle is …

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Climate change negatively impacting bumble bees

Temperature changes have negatively impacted most species of bumble bees over the past 120 years, according to new new research. The researchers note that changes in temperature had more of a negative impact than other factors — such as precipitation or floral resources.Temperature changes have negatively impacted most species of bumble bees over the past …

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Built infrastructure, hunting and climate change linked to huge migratory bird declines

New research shows how migratory birds are declining globally because of the way that humans have modified the landscape in recent decades. A total of 103 species of migrating birds were studied, including rapidly declining species like the turtle dove and the common cuckoo, using large-scale datasets. Advances in satellite imagery allowed the team to …

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Ecological functions of streams and rivers severely affected globally

Agriculture, loss of habitat or wastewater effluents — human stressors negatively impact biodiversity in streams and rivers. Very little is known yet about the extent to which their capacity for self-purification and other essential ecosystem services are also impacted. An international research team has synthesized the globally available research on this topic in a meta-analysis. …

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New way in which T cells learn to tell friend from foe

Researchers identify new mechanism that teaches immune cells-in-training to spare the body’s own tissues while attacking pathogens. As part of this early education, specialized thymus cells ‘pose’ as different tissues, teaching the immune system how to recognize both friend and foe. Immune cells that mistakenly react to the body’s own proteins are eliminated or reassigned …

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