(Phys.org)—Physicists have found the strongest evidence yet for no violation of Lorentz symmetry, one of the fundamental symmetries of relativity. Lorentz symmetry states that the outcome of an experiment does not depend ...
Climate modeling based upon Earth's current greenhouse gas emissions trajectory predicts a worst-case scenario of 4.3°C warming of the planet by 2100 if sufficient measures are not implemented. While the Paris Climate Agreement ...
A new study published today in Nature Sustainability has found that using hydropower dams to generate low emission energy can cause problems for other economic sectors such as food production unless smart designs are employed.
Environment
Jan 27, 2023
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New Curtin-led research has pinpointed the exact home of the oldest and most famous Martian meteorite for the first time ever, offering critical geological clues about the earliest origins of Mars.
Planetary Sciences
Jul 12, 2022
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A primordial stellar stream discovered in the outer reaches of the Milky Way has a lower proportion of heavy elements than any known stellar system in our galaxy. Observations with the Gemini Observatory, a Program of NSF's ...
Astronomy
Jan 5, 2022
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Over 100 nations have issued new commitments to reduce greenhouse gas emissions ahead of the United Nations Conference of the Parties, or COP26, currently underway in Glasgow, Scotland.
Environment
Nov 4, 2021
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Since it was first signed more than five years ago, the Paris Agreement has set the bar for the global effort to reduce greenhouse gas emissions, with more than 70 countries taking on ambitious nationally determined contributions ...
Earth Sciences
May 17, 2021
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Sea levels will continue to rise around the world long after current carbon emissions pledges made through the Paris climate agreement are met and global temperatures stabilize, a new study indicates.
Environment
Nov 4, 2019
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An internationally respected group of scientists have urgently called on world leaders to accelerate efforts to tackle climate change. Almost every aspect of the planet's environment and ecology is undergoing changes in response ...
Environment
Sep 19, 2019
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There have been five mass extinctions in the history of the Earth. But in the 21st century, scientists now estimate that society must urgently come to grips this coming decade to stop the very first human-made biodiversity ...
Environment
Apr 22, 2019
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Coordinates: 48°51′24″N 2°21′03″E / 48.856667°N 2.350833°E / 48.856667; 2.350833
Paris (pronounced /ˈpærɪs/; French: [paʁi] ( listen)) is the capital and largest city in France, situated on the river Seine, in northern France, at the heart of the Île-de-France region (or Paris Region, French: Région parisienne). The city of Paris, within its administrative limits (the 20 arrondissements) largely unchanged since 1860, has an estimated population of 2,211,297 (January 2008), but the Paris metropolitan area has a population of 12,089,098, (January 2008), and is one of the most populated metropolitan areas in Europe. Paris was the largest city in the Western world for about 1,000 years, prior to the 19th century, and the largest in the entire world between the 16th and 19th centuries.
Paris is today one of the world's leading business and cultural centres, and its influences in politics, education, entertainment, media, fashion, science, and the arts all contribute to its status as one of the world's major global cities. It hosts the headquarters of many international organizations such as UNESCO, the OECD, the International Chamber of Commerce or the informal Paris Club. Paris is considered as one of the greenest and most liveable cities in Europe. It is also one of the most expensive.
Paris and the Paris Region, with €552.1 billion (US$768.9 billion) in 2009, produce more than a quarter of the gross domestic product of France. According to 2008 estimates, the Paris agglomeration is Europe's biggest or second biggest city economy and the sixth largest in the world. The Paris Region hosts the headquarters of 33 of the Fortune Global 500 companies, the highest such concentration in Europe, hosted in several business districts, notably La Défense, the largest dedicated business district in Europe. The Paris region has the highest concentration of higher education students in the European Union, is the first in Europe in terms of research and development capability and expenditure and is considered as one of the best cities in the world for innovation. With about 42 million tourists annually in the city and its suburbs, Paris is the most visited city in the world. The city and its region contain 3,800 historical monuments and four UNESCO World Heritage Sites.
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