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Earth-abundant thermoelectrics
Earth-abundant thermoelectrics are thermoelectric materials composed mainly of plentiful, low-toxicity crustal elements, developed as cheaper alternatives to tellurium-based materials; leading sulfides such as tetrahedrite reach figures of merit near 1.
Earth-fill dam
An earth-fill dam is an embankment dam built by compacting successive layers of earth, with an impervious central core and more permeable material on either side.
Earth-Two
Earth-Two (Earth-2) is DC Comics' parallel world for its Golden Age heroes, established in The Flash #123 (1961), home of the Justice Society of America, destroyed in Crisis on Infinite Earths (1985), and relaunched in the New 52 after Apokolips killed Superman, Batman, and Wonder Woman.
Earth–ionosphere waveguide
The Earth–ionosphere waveguide, also called the Earth–ionosphere duct, is the natural duct between the Earth's surface and the lower ionosphere that carries VLF and ELF radio waves over global distances.
Earth, Wind & Fire
Earth, Wind & Fire: American funk, soul, and R&B band founded in Chicago in 1969 by Maurice White; hits "Shining Star" and "September" (1978); over 90 million albums sold; Rock Hall 2000.
Earth, Wind & Fire discography
The Earth, Wind & Fire discography comprises 21 studio albums released between 1970 and 2013, from the 1970 debut to Now, Then & Forever, with hits like "September."
Earth: Final Conflict
Earth: Final Conflict, originally Battleground: Earth, is a syndicated American-Canadian sci-fi series (1997-2002, 110 episodes) developed posthumously from Gene Roddenberry's notes, about the Taelon Companions and a human resistance.
Earth's Children
Earth's Children is Jean M. Auel's six-novel prehistoric series (1980-2011) following Ayla, a Cro-Magnon girl raised by Neanderthals in Ice Age Europe; over 45 million copies sold in 30 languages.
Earth's circumference
Earth's circumference, the length of a great circle around the planet, measures about 40,075 km at the equator; Eratosthenes first estimated it around 240 BC.
Earth's Creation
Earth's Creation is a monumental 1994 abstract painting by Anmatyerr artist Emily Kame Kngwarreye, made in four panels depicting her desert homeland after heavy rain.
Earth's crust
Earth's crust, the outermost solid shell of the Earth, accounts for about 1 percent of Earth's mass and is divided into thinner oceanic and thicker continental types.
Earth's energy budget
Earth's energy budget, also called Earth's energy balance, is the accounting of solar energy entering Earth and radiation leaving it, measured in watts per square meter.
Earth's inner core
Earth's inner core is the solid, centralmost sphere of the planet, made mostly of an iron-nickel alloy, bounded by the liquid outer core at about 1,221 km.
Earth's magnetic field
Earth's magnetic field, also called the geomagnetic field, is generated by the geodynamo in the molten outer core and extends into space as the magnetosphere.
Earth's mantle
Earth's mantle is the thick, mostly solid rock layer between the crust and the core, making up most of Earth's mass and driving plate tectonics and volcanism.
Earth's orbit
Earth's orbit, also called the Earth revolution, is the nearly circular path Earth travels around the Sun every 365.256 days at a mean distance of 149.598 million kilometers.
Earth's outer core
Earth's outer core is the liquid iron-nickel alloy shell surrounding the solid inner core, between about 2,890 and 5,150 km deep, whose churning metal generates Earth's magnetic field.
Earth's rotation
Earth's rotation is the spinning of the planet around its axis, taking 24 hours relative to the Sun and slightly less relative to the stars.
Eartha Kitt
Eartha Kitt (Eartha Mae Keith, 1927-2008), American singer and actress of "Santa Baby" and "C'est si bon" fame, Catwoman in 1960s Batman, blacklisted after her 1968 Vietnam War remarks at a Lady Bird Johnson White House luncheon, later a Tony-nominated Broadway and voice performer.
EarthBound
EarthBound (MOTHER 2: Gyiyg no Gyakushu) is a 1994 SNES RPG by Shigesato Itoi, released in North America in 1995; it sold poorly, became a cult classic, and was re-released on Wii U, 3DS, and Switch Online.
EarthBound 64
EarthBound 64 (Mother 3, MOTHER3) was the cancelled Nintendo 64 sequel to EarthBound, begun on SNES, moved to 64DD then cartridge, shown at Spaceworld 1999, cancelled August 2000, later released as GBA Mother 3 in Japan only.
EarthBound Halloween Hack
EarthBound Halloween Hack, also called Radiation's Halloween Hack: Bad Fur Day Edition, is a 2008 ROM hack of EarthBound by Toby Fox, made for Starmen.Net's Halloween Funfest; it originated Megalovania and precedes Undertale.
EarthCam
EarthCam is an American webcam technology company founded by Brian Cury in 1996 and headquartered in Upper Saddle River, New Jersey, known for live public cameras and construction time-lapse services.
EarthCARE
EarthCARE (Earth Cloud Aerosol and Radiation Explorer), nicknamed Hakuryu, is a joint ESA-JAXA satellite launched in 2024 to measure the vertical structure of clouds and aerosols.
Earthdawn
Earthdawn: fantasy tabletop RPG by FASA, released 1993, set in Barsaive, linked to Shadowrun's magic cycle. Step dice system, adepts, Disciplines, 15 Circles; editions from FASA, Living Room Games, Redbrick, and FASA Games' Fourth Edition.
Earthenware
Earthenware is pottery fired at low temperature so it stays slightly porous and must be glazed to hold liquids; most ancient painted ceramics are earthenware.
Earthflow
An earthflow is a type of landslide in which fine-grained silt and clay move downslope as a viscous flowing mass, slower and drier than a mudflow.
EarthGang
EarthGang (EARTHGANG) is an Atlanta hip-hop duo of Olu (Johnny Venus) and WowGr8 (Doctur Dot), formed in 2008, signed to Dreamville in 2017, part of Spillage Village, known for Mirrorland, Ghetto Gods, and the independent Perfect Fantasy.
Earthian AI
Earthian AI is an Amsterdam startup building small language models for pricing financial risk, which raised a pre-seed round at a $112 million valuation cap in 2026.
Earthing switch
An earthing switch is a mechanical switching device that connects de-energized circuits or high-voltage equipment to earth potential, protecting personnel during maintenance; it is standard in substations and governed by IEC 62271-102.