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The first known mass extinction was the Great Oxidation Event 2.4 billion years ago, which killed most of the planet's obligate anaerobes. Researchers have identified five other major extinction events in Earth's history, with estimated losses below: [11] End Ordovician: 440 million years ago, 86% of all species lost, including graptolites
The history of life on Earth traces the processes by which living and extinct organisms evolved, from the earliest emergence of life to the present day. Earth formed about 4.5 billion years ago (abbreviated as Ga, for gigaannum) and evidence suggests that life emerged prior to 3.7 Ga. [1] [2] [3] The similarities among all known present-day species indicate that they have diverged through the ...
While the oldest members of the Interbellum Generation came of age at the close of the 1910s in 1919, the majority reached maturity in the 1920s and the minority had grown up in the initial years of the Great Depression from 1929 to 1932. The "WWII Generation Proper" came of age in either the second half of the 1930s or the early years of the ...
They first appeared in the fossil record around 66 million years ago, soon after the Cretaceous–Paleogene extinction event that eliminated about three-quarters of plant and animal species on Earth, including most dinosaurs. [25] [26] One of the last Plesiadapiformes is Carpolestes simpsoni, having grasping digits but not forward-facing eyes.
The term 'Lost Generation' is traditionally attributed to Gertrude Stein and was then popularized by Ernest Hemingway in the epigraph to his novel The Sun Also Rises, and his memoir A Moveable Feast. It refers to a group of American literary notables who lived in Paris and other parts of Europe from the time period which saw the end of World ...
With the start of a new year on Jan. 1, 2025, comes the emergence of a new generation. 2025 marks the end of Generation Alpha and the start of Generation Beta, a cohort that will include all ...
The writings express Snyder's vision for humans to live in harmony with the earth and all its creatures. The book was awarded the Pulitzer Prize for Poetry in 1975 . [ 1 ] " Turtle Island " is a name for the continent of North America used by many Native American tribes.
The oldest surviving speculative fiction poem is the Tale of the Shipwrecked Sailor, [8] [better source needed] written in Hieratic and ascribed a date around 2500 BCE. The oldest surviving epic poem, the Epic of Gilgamesh , dates from the 3rd millennium BCE in Sumer (in Mesopotamia , present-day Iraq ), and was written in cuneiform script on ...