Helsinki vs Earth

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Helsinki ( HEL-sink-ee or (listen) hel-SINK-ee; Finnish: [ˈhelsiŋki] (listen); Swedish: Helsingfors, Finland Swedish: [helsiŋˈforsː] (listen); Latin: Helsingia) is the capital, primate and most populous city of Finland. Located on the shore of the Gulf of Finland, It's the chair of the region of Uusimaa in southern Finland, and has a population of 656,229. The city's urban area has a population of 1,268,296, making it by far the most populous metropolitan area in Finland as well as the nation's most important center for politics, education, finance, culture, and research; while Tampere in the Pirkanmaa region, situated 179 kilometres (111 mi) to the north from Helsinki, is the second largest urban area in Finland. Helsinki is situated 80 kilometres (50 mi) north of Tallinn, Estonia, 400 kilometers (250 mi) east of Stockholm, Sweden, and 300 km (190 mi) west of Saint Petersburg, Russia. It has close historical ties with these 3 cities. Together with the cities of Espoo, Vantaa, and Kauniainen, and surrounding commuter cities, Helsinki creates the Greater Helsinki metropolitan area, which has a population of over 1.

5 million. Often considered to be Finland's only metropolis, it's the world's northernmost metro area with over one million individuals as well as the northernmost capital of an EU member state. After Stockholm and Oslo, Helsinki is the third largest municipality in the Nordic countries. Finnish and Swedish are both official languages. The city is served by the international Helsinki Airport, located in the neighboring city of Vantaa, with frequent service to many destinations in Europe and Asia. Helsinki was the World Design Capital for 2012, the venue for the 1952 Summer Olympics, and the host of the 52nd Eurovision Song Contest in 2007. Helsinki has among the world's highest urban standards of living. In 2011, the British magazine Monocle rated Helsinki the world's most liveable city in its liveable cities indicator. From the Economist Intelligence Unit's 2016 liveability survey, Helsinki was rated ninth among 140 cities.

Source: Wikipedia

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Earth is the third planet from the Sun and the only astronomical object known to harbor life. About 29% of Earth's surface is land consisting of continents and islands. The remaining 71% is covered with water, mostly by oceans but also lakes, rivers and other fresh water, which together constitute the hydrosphere. Much of Earth's polar regions are covered in ice. Earth's outer layer is divided into several rigid tectonic plates that migrate across the surface over many millions of years. Earth's interior remains active with a solid iron inner core, a liquid outer core that generates Earth's magnetic field, and a convecting mantle that drives plate tectonics. According to radiometric dating estimation and other evidence, Earth formed over 4.5 billion years ago. Within the first billion years of Earth's history, life appeared in the oceans and began to affect Earth's atmosphere and surface, leading to the proliferation of anaerobic and, later, aerobic organisms. Some geological evidence indicates that life may have arisen as early as 4.1 billion years ago. Since then, the combination of Earth's distance from the Sun, physical properties and geological history have allowed life to evolve and thrive. In the history of life on Earth, biodiversity has gone through long periods of expansion, occasionally punctuated by mass extinctions.

Over 99% of all species that ever lived on Earth are extinct. Almost 8 billion humans live on Earth and depend on its biosphere and natural resources for their survival. Humans increasingly impact Earth's hydrology, atmospheric processes and other life. Earth's atmosphere consists mostly of nitrogen and oxygen. Tropical regions receive more energy from the Sun than polar regions, which is redistributed by atmospheric and ocean circulation. Greenhouse gases also play an important role in regulating the surface temperature. A region's climate is not only determined by latitude, but also by its proximity to moderating oceans and height among other factors. Extreme weather, such as tropical cyclones and heat waves, occurs in most areas and has a large impact on life. Earth's gravity interacts with other objects in space, especially the Sun and the Moon, which is Earth's only natural satellite. Earth orbits around the Sun in about 365.25 days. Earth's axis of rotation is tilted with respect to its orbital plane, producing seasons on Earth. The gravitational interaction between Earth and the Moon causes tides, stabilizes Earth's orientation on its axis, and gradually slows its rotation. Earth is the densest planet in the Solar System and the largest and most massive of the four rocky planets.

Source: Wikipedia