Prokaryote  

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- +A '''prokaryote''' is usually a [[unicellular organism]], sometimes a multi-cellular organism, that lacks a [[biological membrane|membrane]]-bound [[cell nucleus|nucleus]], [[mitochondrion|mitochondria]], or any other membrane-bound [[organelle]].
-'''James Lovelock''', [[Order of the Companions of Honour|CH]], [[Order of the British Empire|CBE]], [[Royal Society|FRS]] (born 26 July 1919) is an independent scientist, [[environmentalist]] and [[futurologist]] who lives in [[Devon]], [[England]]. He is best known for proposing the [[Gaia hypothesis]], which postulates that the [[biosphere]] is a self-regulating entity with the capacity to keep our planet healthy by controlling the chemical and physical environment.+== See also ==
-=== Nuclear power ===+*[[Bacterial cell structure]]
-Lovelock has become concerned about the threat of global warming from the [[greenhouse effect]]. In 2004 he caused a media sensation when he broke with many fellow environmentalists by pronouncing that "only nuclear power can now halt global warming". In his view, nuclear energy is the only realistic alternative to fossil fuels that has the capacity to both fulfill the large scale energy needs of humankind while also reducing greenhouse emissions. He is an open member of [[Environmentalists for Nuclear|Environmentalists for Nuclear Energy]].+*[[Evolution of sexual reproduction]]
- +*[[List of sequenced archaeal genomes]]
-In 2005, against the backdrop of renewed UK government interest in nuclear power, Lovelock again publicly announced his support for nuclear energy, stating, "I am a Green, and I entreat my friends in the movement to drop their wrongheaded objection to nuclear energy". Although these interventions in the public debate on nuclear power are recent, his views on it are longstanding. In his 1988 book ''[[The Ages of Gaia]]'' he states: +*[[List of sequenced bacterial genomes]]
-<blockquote>I have never regarded [[nuclear radiation]] or nuclear power as anything other than a normal and inevitable part of the environment. Our [[Prokaryote|prokaryotic]] forebears evolved on a planet-sized lump of [[Nuclear fallout|fallout]] from a star-sized nuclear explosion, a [[supernova]] that [[Nucleosynthesis|synthesised]] the [[Chemical element|elements]] that go to make our planet and ourselves.+*[[Monera]], an obsolete [[kingdom (biology)|kingdom]] including [[Archaea]] and [[Bacteria]]
-</blockquote>+*[[Nanobacterium]]
- +*[[Nanobe]]
-In ''[[The Revenge of Gaia]]'' (2006), where he puts forward the concept of [[sustainable retreat]], Lovelock writes:<blockquote>A television interviewer once asked me, "But what about nuclear waste? Will it not poison the whole biosphere and persist for millions of years?" I knew this to be a nightmare fantasy wholly without substance in the real world... One of the striking things about places heavily contaminated by radioactive nuclides is the richness of their wildlife. This is true of the land around [[Chernobyl disaster|Chernobyl]], the bomb test sites of the Pacific, and areas near the United States' [[Savannah River]] nuclear weapons plant of the Second World War. Wild plants and animals do not perceive radiation as dangerous, and any slight reduction it may cause in their lifespans is far less a hazard than is the presence of people and their pets... I find it sad, but all too human, that there are vast bureaucracies concerned about nuclear waste, huge organisations devoted to decommissioning power stations, but nothing comparable to deal with that truly malign waste, carbon dioxide.</blockquote>+*[[Parakaryon myojinensis|Parakaryon]]
- +
- +
-==See also==+
-* [[Gaia Symphony (TV Series)|Gaia Symphony]]+
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Train wreck at Montparnasse (October 22, 1895) by Studio Lévy and Sons.
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Train wreck at Montparnasse (October 22, 1895) by Studio Lévy and Sons.

A prokaryote is usually a unicellular organism, sometimes a multi-cellular organism, that lacks a membrane-bound nucleus, mitochondria, or any other membrane-bound organelle.

See also




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