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How Bacteria Help Regulate Blood Pressure
Kidneys sniff out signals from gut bacteria for cues to lower blood pressure after meals. Our understanding of how the symbiotic microbes affect health is becoming much more molecular.
The Overlooked Link Between Two of This Year’s Nobel Prizes
To better understand the molecules described by the latest prize in medicine, we will need the technique recognized by the latest prize in chemistry.
Bacteria Sacrifice DNA Repair for Better RNA
Preserving its DNA ought to be a cell’s top priority. But bacteria slow their DNA repair to a crawl in favor of proofreading gene transcripts.
New Model Warns About CRISPR Gene Drives in the Wild
Two new papers urge caution in using powerful genome-editing technology against invasive species: Models show that aggressive gene drives can’t be contained in the wild.
Choosy Eggs May Pick Sperm for Their Genes, Defying Mendel’s Law
The oldest law of genetics says that gametes combine randomly, but experiments hint that sometimes eggs select sperm actively for their genetic assets.
Seeing the Beautiful Intelligence of Microbes
Bacterial biofilms and slime molds are more than crude patches of goo. Detailed time-lapse microscopy reveals how they sense and explore their surroundings, communicate with their neighbors and adaptively reshape themselves.
A Zombie Gene Protects Elephants From Cancer
Elephants did not evolve to become huge animals until after they turned a bit of genetic junk into a unique defense against inevitable tumors.
Life’s First Molecule Was Protein, Not RNA, New Model Suggests
Which mattered first at the dawn of life: proteins or nucleic acids? Proteins may have had the edge if a theorized process let them grow long enough to become self-replicating catalysts.
The Unforgiving Math That Stops Epidemics
If you didn't get a flu shot, you are endangering more than just your own health. Calculations of herd immunity against common diseases don't make exceptions.