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The service did not meet the 3-hour travel time objective between Boston and New York City. The time was 3 hours and 24 minutes as it partially ran on regular lines, limiting its average speed, with a maximum speed of 240 km/h (150 mph) being reached on a small section of its route through Rhode Island and Massachusetts. [69] [70]
Artificial intelligence (AI), in its broadest sense, is intelligence exhibited by machines, particularly computer systems.It is a field of research in computer science that develops and studies methods and software that enable machines to perceive their environment and use learning and intelligence to take actions that maximize their chances of achieving defined goals. [1]
Females born in the US in 2015 have a life expectancy of 81.6 years, and males 76.9 years; more than three years less and as much as over five years less than people born in Switzerland (85.3 F, 81.3 M) or Japan (86.8 F, 80.5 M) in 2015. [71]
The Milky Way is approximately 890 billion to 1.54 trillion times the mass of the Sun in total (8.9 × 10 11 to 1.54 × 10 12 solar masses), [7] [8] [9] although stars and planets make up only a small part of this. Estimates of the mass of the Milky Way vary, depending upon the method and data used.
According to Statista, it is estimated that, in 2022, around 3.96 billion people were using social media globally. This number is up from 3.6 billion in 2020. [57] The following is a list of the most popular social networking services based on the number of active users as of January 2024 per Statista. [58]
A study by Inês Nogueiro et al. (July 2009) on the Jews of north-eastern Portugal (region of Trás-os-Montes) showed that their paternal lines consisted of 35.2% lineages more typical of Europe (R : 31.7%, I : 3.5%), and 64.8% lineages more typical of the Near East than Europe (E1b1b: 8.7%, G: 3.5%, J: 36.8%, T: 15.8%) and consequently, the ...
Politically, Europe is divided into about fifty sovereign states, of which Russia is the largest and most populous, spanning 39% of the continent and comprising 15% of its population. Europe had a total population of about 745 million (about 10% of the world population ) in 2021; the third-largest after Asia and Africa.