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Timeline of evolution
This timeline of the evolution of life outlines the major events in the development of life on the planet Earth. Dates given are estimates based on scientific evidence.
In biology, evolution is the process by which populations of organisms acquire and pass on novel traits from generation to generation. Its occurrence over large stretches of time explains the origin of new species and ultimately the vast diversity of the biological world. Contemporary species are related to each other through common descent, products of evolution and speciation over billions of years. The basic timeline is a 4600 million year old Earth with: 4000 my (million years) of simple cells; 3000 my of photosynthesis; 2000 my of complex cells; 1000 my of multicellular life; 600 my of simple animals; 500 my of fish and proto-amphibians; 475 my of land plants; 400 my of insects and seeds; 360 my of amphibians; 300 my of reptiles; 200 my of mammals; 150 my of birds; 100 my of flowers; and 65 my since the non-avian dinosaurs died out.
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Plants & Animals News
October 29, 2025
Oct. 29, 2025 — Researchers at QUT uncovered how corals reattach to reefs through a three-phase process involving tissue transformation, anchoring, and skeleton formation. Differences among species reveal why some corals grow and attach faster than others. ...
Oct. 29, 2025 — Beneath the ice of Antarctica’s Weddell Sea, scientists discovered a vast, organized city of fish nests revealed after the colossal A68 iceberg broke away. Using robotic explorers, they found over ...
Oct. 28, 2025 — An international team of researchers led by scientists from the Max Planck Institute for Evolutionary Anthropology in Leipzig, working with 15 collaborators around the world, has conducted the most comprehensive study yet of lifespan differences ...
Oct. 27, 2025 — Extinction rates are not spiraling upward as many believe, according to a large-scale study analyzing 500 years of data. Researchers found that species losses peaked about a century ago and have decreased since, with different drivers shaping past ...
Oct. 27, 2025 — A team of researchers has developed a floral-scented fungus that tricks mosquitoes into approaching and dying. The fungus emits longifolene, a natural scent that irresistibly draws them in. It’s harmless to humans, inexpensive to produce, and ...
Oct. 26, 2025 — Dinosaurs weren’t dying out before the asteroid hit—they were thriving in vibrant, diverse habitats across North America. Fossil evidence from New Mexico shows that distinct “bioprovinces” of dinosaurs existed until the very end. Their ...
Oct. 26, 2025 — New research shows that hippos lived in central Europe tens of thousands of years longer than previously thought. Ancient DNA and radiocarbon dating confirm they survived in Germany’s Upper Rhine Graben during a milder Ice Age phase. Closely ...
Oct. 25, 2025 — Reptiles don’t just pee, they crystallize their waste. Researchers found that snakes and other reptiles form tiny uric acid spheres, a water-saving evolutionary trick. This discovery could illuminate how to prevent gout and kidney stones in ...
Oct. 23, 2025 — In the mist-shrouded mountains of New Guinea, a Czech researcher has achieved a world-first — capturing photos, video, and data of the elusive Subalpine Woolly Rat, Mallomys istapantap. Once known only from museum specimens, this giant, shaggy ...
Oct. 22, 2025 — Common dolphins in the North Atlantic are living significantly shorter lives, with female longevity dropping seven years since the 1990s. Researchers found this decline by analyzing stranded dolphins, revealing a 2.4% drop in population growth ...
Oct. 20, 2025 — Naked mole-rats seem to have found nature’s cheat code for longevity. Scientists discovered that small tweaks in one of their proteins make it better at fixing DNA damage, helping the animals resist aging. Even fruit flies with the same changes ...
Oct. 19, 2025 — Researchers have developed a light-emitting sugar probe that exposes how marine microbes break down complex carbohydrates. The innovative fluorescent tool allows scientists to visualize when and where sugars are degraded in the ocean. This ...
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Oct. 29, 2025 — UCL scientists found that human skulls evolved much faster than those of other apes, reflecting the powerful forces driving our brain growth and facial flattening. By comparing 3D models of ape ...
Oct. 28, 2025 — Fungi’s evolutionary roots stretch far deeper than once believed — up to 1.4 billion years ago, long before plants or animals appeared. Using advanced molecular dating and gene transfer analysis, ...
Oct. 26, 2025 — Life’s origin story just became even more mysterious. Using mathematics and information theory, Robert G. Endres of Imperial College London found that the spontaneous emergence of life from ...
Oct. 26, 2025 — Scientists have found that mushrooms can act as organic memory devices, mimicking neural activity while consuming minimal power. The Ohio State team grew and trained shiitake fungi to perform like ...
Oct. 25, 2025 — In a groundbreaking discovery, scientists at Trinity College Dublin have identified a "universal thermal performance curve" that governs how all living organisms respond to temperature. This finding ...
Oct. 24, 2025 — Scientists have unveiled Khankhuuluu, a new Mongolian dinosaur species that predates and closely resembles early Tyrannosaurs. With its long snout, small horns, and lean build, it represents a ...
Oct. 24, 2025 — MIT researchers discovered that the genome’s 3D structure doesn’t vanish during cell division as previously thought. Instead, tiny loops called microcompartments remain (and even strengthen) ...
Oct. 22, 2025 — Under the sea, green algae have evolved a clever way to handle too much sunlight. Scientists found that a special pigment called siphonein acts like a natural sun shield, protecting the algae’s ...
Oct. 19, 2025 — Mars’ north polar vortex locks its atmosphere in extreme cold and darkness, freezing out water vapor and triggering a dramatic rise in ozone. Scientists found that the lack of sunlight and moisture ...
Oct. 19, 2025 — Researchers discovered the gene that gives a rare wheat variety its unusual “triple-grain” trait. When switched on, the gene helps wheat flowers produce extra grain-bearing parts. The finding ...