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167,133 articles from ScienceDaily

Barriers against Antarctic ice melt disappearing at the double

Undersea anchors of ice that help prevent Antarctica's land ice from slipping into the ocean are shrinking at more than twice the rate compared with 50 years ago, research shows. More than a third of these frozen moorings, known as pinning points, have decreased in size since the turn of the century, experts say. Further deterioration of pinning points, which hold in place the floating ice sheets...

Similarities and differences in human and insect vision formation

Researchers have discovered profound similarities and surprising differences between humans and insects in the production of the critical light-absorbing molecule of the retina, 11-cis-retinal, also known as the 'visual chromophore.' The findings deepen understanding of how mutations in the RPE65 enzyme cause retinal diseases, especially Leber congenital amaurosis, a devastating childhood blinding...

New insights into immune system role in lung cancer risk

Recent developments in cancer research have highlighted the vital role of the immune system, particularly in the notable successes of cancer immunotherapy. Now, a paradigm-shifting study sheds light on how variations in immune genetics influence lung cancer risk, potentially paving the way for enhanced prevention strategies and screening.

Chemists synthesize unique anticancer molecules using novel approach

Nearly 30 years ago, scientists discovered a unique class of anticancer molecules in a family of bryozoans, a phylum of marine invertebrates found in tropical waters. The chemical structures of these molecules, which consist of a dense, highly complex knot of oxidized rings and nitrogen atoms, has attracted the interest of organic chemists worldwide, who aimed to recreate these structures from...

Copies of antibiotic resistance genes greatly elevated in humans and livestock

Researchers have uncovered a key link between the spread of antibiotic resistance genes and the evolution of resistance to new drugs in certain pathogens. Bacteria exposed to higher levels of antibiotics often harbor multiple identical copies of protective antibiotic resistance genes which are linked to 'jumping genes' that can move from strain to strain. Duplicate genes provide a mechanism for...