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What Causes Alzheimer’s? Scientists Are Rethinking the Answer.
After decades in the shadow of the reigning model for Alzheimer’s disease, alternative explanations are finally getting the attention they deserve.
Protein Blobs Linked to Alzheimer’s Affect Aging in All Cells
Protein buildups like those seen around neurons in Alzheimer’s, Parkinson’s and other brain diseases occur in all aging cells, a new study suggests. Learning their significance may reveal new strategies for treating age-related diseases.
Powerful ‘Machine Scientists’ Distill the Laws of Physics From Raw Data
Researchers say we’re on the cusp of “GoPro physics,” where a camera can point at an event and an algorithm can identify the underlying physics equation.
Ancient Genes for Symbiosis Hint at Mitochondria’s Origins
Was the addition of mitochondria a first step in the formation of complex cells or one of the last? A new study of bacteria tries to answer this contentious question in evolutionary biology.
Mitochondria Double as Tiny Lenses in the Eye
The optical properties of mitochondrial bundles in the retina may improve how efficiently the eye captures light.
Cells Blaze Their Own Trails to Navigate Through the Body
With self-generated gradients of chemicals and physical tension, cells in the body steer themselves to vital destinations.
Most Complete Simulation of a Cell Probes Life’s Hidden Rules
A 3D digital model of a “minimal cell” leads scientists closer to understanding the barest requirements for life.
The Year in Biology
The detailed understanding of brains and multicellular bodies reached new heights this year, while the genomes of the COVID-19 virus and various organisms yielded more surprises.
Sponge Genes Hint at the Origins of Neurons and Other Cells
A new study of gene expression in sponges reveals the complex diversity of their cells as well as some possibly ancient connections between the nervous, immune and digestive systems.