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Evolution Of Life

All articles tagged with #evolution of life

science-and-technology2 years ago

"Study Unveils Revolutionary Kinetic Asymmetry in Molecular Interactions"

Researchers have discovered a new type of non-reciprocal molecular interaction, termed kinetic asymmetry, which does not require external forces such as hydrodynamics. This phenomenon could redefine our understanding of molecular interactions and has implications for the evolution of life and the design of molecular machines. The study, conducted by scientists from the University of Maine and Penn State, suggests that local gradients of reactants and products around catalysts, like enzymes, can lead to one molecule being repelled by yet attracting another molecule. This insight into kinetic asymmetry could also inform the development of synthetic molecular motors and pumps, offering a deeper understanding of the origins of life and the complex behavior of matter.

science2 years ago

Unveiling the Origins of Biomineralization: Ediacaran Fossils Shed Light on Earth's Life Expansion

New research on Ediacaran fossils in Namibia reveals the origins of biomineralization, a vital chemical process that led to the expansion of life on Earth. Fossil skeletons of Cloudina, tubular structures made of carbonate cones, were found dating back to 551-550 million years ago. Geochemical analysis of the rocks suggests that Cloudina originated in a low oxygen environment with periods of higher oxygenation. The study supports the idea that skeletonization was driven by the instability of the marine environment and the opportunistic colonization of short-lived periods of respiration during oxygenation.