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Earth + Climate Change

INDEXAirBiodiversity • Biomass • BUSINESS SERVICE DIRECTORYEarthEco-Lodging • Eco-ToursEnergyEnvironmentFarmingFoodGardening • Geothermal • Green BuildingGreen ConferencesHEALTH + WELLNESS DIRECTORYHemp • Hydropower • Lifestyle • Ocean Wave/Current • Organic AlcoholProducts • Renewables • RestaurantsRetailServicesShelterSolar EnergySPIRITUAL + METAPHYSICAL DIRECTORYSUSTAINABLE LIVING + GREEN DIRECTORYSustainabilityTransportationTravelWaterWind Energy

Earth + Climate Change sources

Planet Earth

Earth is the third planet from the Sun. Earth is the largest of the terrestrial planets in the Solar System in diameter, mass and density. It is also referred to as the Earth, Planet Earth, the World, and Terra. Home to millions of species, including humans, Earth is the only place in the universe where life is known to exist.

Scientific evidence indicates that the planet formed 4.54 billion years ago, and life appeared on its surface within a billion years. Since then, Earth's biosphere has significantly altered the atmosphere and other abiotic conditions on the planet, enabling the proliferation of aerobic organisms as well as the formation of the ozone layer which, together with Earth's magnetic field, blocks harmful radiation, permitting life on land.

Earth's outer surface is divided into several rigid segments, or tectonic plates, that gradually migrate across the surface over periods of many millions of years. About 71% of the surface is covered with salt-water oceans, the remainder consisting of continents and islands; liquid water, necessary for all known life, is not known to exist on any other planet's surface. Earth's interior remains active, with a thick layer of relatively solid mantle, a liquid outer core that generates a magnetic field, and a solid iron inner core. Earth interacts with other objects in outer space, including the Sun and the Moon.

At present, Earth orbits the Sun once for every roughly 366.26 times it rotates about its axis. This length of time is a sidereal year, which is equal to 365.26 solar days. The Earth's axis of rotation is tilted 23.4° away from the perpendicular to its orbital plane, producing seasonal variations on the planet's surface with a period of one tropical year (365.24 solar days). Earth's only known natural satellite, the Moon, which began orbiting it about 4.53 billion years ago, provides ocean tides, stabilizes the axial tilt and gradually slows the planet's rotation. A cometary bombardment during the early history of the planet played a role in the formation of the oceans. Later, asteroid impacts caused significant changes to the surface environment.

Resource Center - Earth

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Resource Center - Topical Index

All Portal INDEX

ALL PORTAL INDEXActivismAcupressureAcupunctureAirAnti-AgingAromatherapyArtsAssociatesAstrologyAstronomyAudiosAwakeningAyurvedaBiodiversityBodyworkBooksBreathworkBusinessBUSINESS SERVICE DIRECTORYCancer TherapiesCaregivingCelebrationCentersChildbirthChildrenChinese MedicineChiropractorsCleansingCommunicationsCommunityConsciousnessCraniosacral TherapyCultureDance • DentalDetoxDevelopmentDietDreamworkEastern MedicineEarthEco-LodgingEco-ToursEconomic JusticeEconomicsEducationEmpowermentEnergyEnergy MedicineEnlightenmentEntertainmentEntheogensEnvironmentEventsFamilyFarmingFeng ShuiFestivalsFilmFirst PeoplesFitnessFlower EssencesFoodFreedomGardeningGovernanceGreen BuildingGreen Conferences & EventsHakomiHealingHEALTH + WELLNESS DIRECTORYHealth CoachingHempHerbologyHerstoryHistoryHolistic MDsHomeopathyHospitalsHot SpringsHypnotherapyIndigenousInsuranceIntegrative PhysiciansInternetJesusJournalismLawLibrariesLife CoachingLifestyleLoveMarihuanaMarketingMassageMediaMedical MarihuanaMeditationMenMental HealthMetaphysicsMicrobreweriesMidwiferyMindfulnessMoneyMusicNaturopathyNetworkingNLPNews SourcesNon-ProfitsNon-Toxic CleaningNutritionOpportunitiesOrganic AlcoholOrganic ProductsOriental MedicineOxygen + Ozone TherapiesParentsPerforming ArtsPhysical TherapyPilatesPoetryPoliticalPranic HealingProductsPromotionPsychicsPsychotherapyQi GongReal EstateReflexologyReikiRelationshipReligionResource CentersRestaurantsRetail StoresRetreatsSchoolsScienceSecurityServicesSexualityShiatsuSeniorsShamanismShelterSleepSocial JusticeSocial Media NetworksSolar EnergySourceSovereigntySpaceSpasSPIRITUAL + METAPHYSICAL DIRECTORYSpiritual CounselingSupplementsSUSTAINABLE LIVING + GREEN DIRECTORYSustainabilityTai ChiTantraTechnologyTheaterTransformationTransportationTravelVedicVision QuestWaterWater TherapyWatsuWeb ToolsWellnessWellness CentersWineriesWhole SystemsWind EnergyWisdomWomenYogaYouth


INDEXAssociate PartnersBusinessBUSINESS SERVICE DIRECTORY • Coaching • Communications • Community PartnersDevelopmentEconomics • Event PromotionInsuranceMarketingMoneyNon-ProfitsOpportunitiesReal Estate

Communications + Connection

INDEXAudios + RecordingBooksBUSINESS SERVICE DIRECTORYCommunicationsComputersFilmHEALTH + WELLNESS DIRECTORYInternetJournalismLibrariesMediaNetworkingNews SourcesResource CentersSocial MediaSPIRITUAL + METAPHYSICAL DIRECTORYSUSTAINABLE LIVING + GREEN DIRECTORY

Community + People

INDEXChildrenCommunityCultureFamilyFestivalsGreen Conferences + EventsLifestyleLoveMenParentsRelationshipSeniorsSocial Media NetworksWomenYouth

Eco-Tours + Travel

INDEXEarthEco-LodgingEco-ToursRetreatsSpasTravelWellness Centers

Education + Learning

INDEXAudios • Conferences • EducationFilmsHerstoryHistoryLearning • Lectures + Speakers • Neurolinguistic Programing (NLP)SchoolsWhole SystemsWisdom • Workshops + Classes

Entertainment + Arts

INDEXArtsBooksCelebrationCultureDanceEntertainmentEventsFestivalsFilmMediaMusicPerforming ArtsPoetryTheater

Health + Wellness Service Directory

INDEXAcupressureAcupunctureAnti-AgingAromatherapyAyurvedaBodyworkBreathworkCancer TherapiesCaregivingChildbirthChinese MedicineChiropractorsCleansingCraniosacral TherapyDentalDetoxDietDreamworkEastern MedicineEnergy MedicineFitnessFlower EssencesHakomiHealingHEALTH + WELLNESS DIRECTORYHealth CoachingHerbologyHolistic MDsHomeopathyHospitalsHot SpringsHypnotherapyIntegrative PhysiciansLife CoachingMassageMedical MarijuanaMeditationMental HealthMidwiferyNaturopathyNLPNutritionOxygen + Ozone TherapiesPhysical TherapyPilatesPranic HealingPsychicsPsychotherapyPranic HealingQi GongReikiReflexologyRetreatsSexualityShiatsuSleepSpasSPIRITUAL + METAPHYSICAL DIRECTORYSpiritual CounselingSupplementsSUSTAINABLE LIVING + GREEN DIRECTORYTai ChiTantraWater Therapy + WatsuWellness CentersYoga

Science + Technology

INDEXAirAstronomyCommunicationsEarthEnergyEnvironmentHealthOxygenScience SpaceTechnologyWaterWhole Systems

source Centers


INDEXEconomic JusticeEmpowermentFreedomGovernanceIndigenousLawPoliticalSecuritySocial JusticeSovereignty

TAKE ACTIONActivismBoycottsOccupyPetitionsProtests

Spiritual + Metaphysical Directory

INDEXAstrologyAwakeningBreathworkConsciousnessDreamworkEmpowermentEnlightenmentEntheogensHealingHEALTH + WELLNESS DIRECTORYIndigenousLife CoachingLoveMeditationMetaphysicsMindfulnessReligionShamanismSleepSourceSpiritual + Psychic CounselingSPIRITUAL + METAPHYSICAL DIRECTORY SUSTAINABLE LIVING + GREEN DIRECTORYTantraTransformationVision QuestWisdomYoga

Sustainable Living + Green Directory

INDEXAirBiodiversity • Biomass • BUSINESS SERVICE DIRECTORYEarthEco-Lodging • Eco-ToursEnergyEnvironmentFarmingFoodGardening • Geothermal • Green BuildingGreen ConferencesHEALTH + WELLNESS DIRECTORYHemp • Hydropower • Lifestyle • Ocean Wave/Current • Organic AlcoholProducts • Renewables • RestaurantsRetailServicesShelterSolar EnergySPIRITUAL + METAPHYSICAL DIRECTORYSUSTAINABLE LIVING + GREEN DIRECTORYSustainabilityTransportationTravelWaterWind Energy

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