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ChemMedChem is a biweekly peer-reviewed scientific journal covering medicinal chemistry.It is published by Wiley-VCH on behalf of Chemistry Europe.In addition to original research in the form of full papers and shorter communications, the journal contains review-type articles (reviews, minireviews, patent reviews, essays, highlights) as well as occasional book reviews and conference reports.
The earliest evidence for life on Earth includes: 3.8 billion-year-old biogenic hematite in a banded iron formation of the Nuvvuagittuq Greenstone Belt in Canada; [30] graphite in 3.7 billion-year-old metasedimentary rocks in western Greenland; [31] and microbial mat fossils in 3.48 billion-year-old sandstone in Western Australia.
Periodic Videos (also known as The Periodic Table of Videos) is a video project and YouTube channel on chemistry. It consists of a series of videos about chemical elements and the periodic table , with additional videos on other topics in chemistry and related fields.
The AOL.com video experience serves up the best video content from AOL and around the web, curating informative and entertaining snackable videos.
Dailymotion, a French video-sharing website, is founded. [19] 2005 April 23 Companies YouTube opens for video uploads, and the first YouTube video uploaded on April 23, 2005, is titled Me at the zoo. [20] Between March and July 2006, YouTube grows from 30 to 100 million views of videos per day. 2006 May 14 Companies
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The Purple Earth Hypothesis (PEH) is an astrobiological hypothesis, first proposed by molecular biologist Shiladitya DasSarma in 2007, [1] that the earliest photosynthetic life forms of Early Earth were based on the simpler molecule retinal rather than the more complex porphyrin-based chlorophyll, making the surface biosphere appear purplish ...
As for life on land, in 2019 scientists reported the discovery of a fossilized fungus, named Ourasphaira giraldae, in the Canadian Arctic, that may have grown on land a billion years ago, well before plants are thought to have been living on land. [99] [100] [101] The earliest life on land may have been bacteria 3.22 billion years ago. [102]