Ciekawostka: You share your birthday with at least 9 million other people in the world

Evidence: — • authority: 80

How many people need to be in a room for two to share a birthday? It’s fewer than you think. Here’s why

Evidence: — • authority: 80

Figure 1.29 Share of CO2 emissions from transport and energy sector in the metropolitan areas with more than 1.5 million people, 2008

Evidence: — • authority: 80

Daily briefing: At least 65 million people have long COVID

Evidence: — • authority: 72

Instagram is an American photo and short-form video sharing social networking service owned by Meta Platforms. It allows users to upload media that can be edited with filters, be organized by hashtags, and be associated with a location via geographical tagging. Posts can be shared publicly or with preapproved followers. Users can browse other users' content by tags and locations, view trending content, like photos, and follow other users to add their content to a personal feed. A Meta-operated image-centric social media platform, it is available on iOS, Android, Windows, and the Web. Users can take photos and edit them using built-in filters and other tools, then share them on other social…

Evidence: — • authority: 72

A centenarian is a person who has reached the age of 100. Because life expectancies at birth worldwide are well below 100, the term is invariably associated with longevity. The United Nations estimated that there were 316,600 living centenarians worldwide in 2012, and 573,000 in 2020, almost quadruple the 2000 estimate of 151,000. As world population and life expectancy continue to increase, the number of centenarians is expected to increase substantially in the 21st century. According to the Office of National Statistics in the United Kingdom, one-third of babies born in the country in 2013 are expected to live to 100. According to a 1998 United Nations demographic survey, Japan is expecte…

Evidence: — • authority: 72

This list shows the distribution of the Buddhist religion, practiced by about 320 million people, representing 4.1% of the world's total population as of 2020. By sheer numbers, Thailand accounts for the largest portion of the global Buddhist population. It is the state religion in three countries — Cambodia, Bhutan and Sri Lanka. Pew Research Center stated that Buddhism was the only religion to have declined in their 2010 to 2020 report covering the global religious landscape. Mahayana, the largest branch of Buddhism, is followed by around 53% of Buddhists, mainly centered in East Asia whereas the second-largest branch Theravada is mostly followed in Mainland Southeast Asia and Sri Lanka w…

Evidence: — • authority: 72

In world demographics, the world population is the total number of humans currently alive. It was estimated by the United Nations to have exceeded 8 billion (8,000,000,000) on November 15, 2022. It took around 300,000 years of human prehistory and history for the human population to reach a billion and only 218 more years from there to reach 8 billion. As of 2026, the world population is approximately 8.3 billion. However, this figure is only a very rough approximation (see § History). The human population experienced continuous growth following the Great Famine of 1315–1317 and the end of the Black Death in 1350, when it had reached nearly 370 million. The highest global population growth…

Evidence: — • authority: 72

LinkedIn is an American business and employment-oriented social networking service used globally. The platform is primarily used for professional networking and career development, as it allows job seekers to post their CVs and employers to post their job listings. It was launched on May 5, 2003, by Reid Hoffman and Eric Ly, receiving financing from numerous venture capital firms, including Sequoia Capital, in the years following its inception. Users can invite other people to become connections on the platform, regardless of whether the invitees are already members of LinkedIn. As the platform grew, its use expanded beyond recruiting into a primary channel for professional visibility and a…

Evidence: — • authority: 72

In probability theory, the birthday problem asks for the probability that, in a set of n randomly chosen people, at least two will share the same birthday. The birthday paradox is the counterintuitive fact that only 23 people are needed for that probability to exceed 50%. The birthday paradox is a veridical paradox: it seems wrong at first glance but is, in fact, true. While it may seem surprising that only 23 individuals are required to reach a 50% probability of a shared birthday (the number being less than 1/15th of the number of days in a year), this result is made more intuitive by considering that the birthday comparisons will be made between every possible pair of individuals. With 2…

Evidence: — • authority: 35