Wars and conflicts have drastically shaped population patterns, with regions like the Middle East seeing rapid displacement and population shifts, such as Syria’s population dropping by nearly 10 million since 2011, while European nations like Germany have experienced population growth due to refugee inflows, and conflict in Sub-Saharan Africa has led to both high birth rates and mass migrations, increasing pressure on neighboring countries.

Cultural factors play a major role in population growth, with countries like Niger, where large families are the norm, experiencing a high fertility rate of 6.7 births per woman, leading to rapid population growth, while nations like Italy, where shifting social norms and economic pressures discourage larger families, face population decline, with birth rates falling below 1.3 births per woman.

As climate change displaces millions, regions like sub-Saharan Africa and parts of Asia are experiencing rapid population growth due to climate-induced migration, while areas such as small island nations and drought-stricken rural communities are seeing significant population declines, with some projections estimating up to 216 million climate migrants by 2050.

Birth rates and death rates vary significantly across the globe, with countries like Kenya experiencing high birth rates of around 27 births per 1,000 people, contributing to rapid population growth, while Argentina, Peru, Morocco, Vietnam, and Malaysia maintain moderate growth with birth rates exceeding death rates. In contrast, Ukraine faces a population decline, with a birth rate of just 7.3 per 1,000 and a death rate nearly double that, driven by aging demographics and emigration.

Advancements in technology, such as AI-driven demographic models and satellite mapping, have improved tracking and predicting population trends, revealing that Thailand's population growth is slowing with a birth rate of 9 per 1,000, while Sweden maintains steady growth through immigration. Morocco continues to expand with a population surpassing 37 million, whereas New Zealand, despite technological advancements in census tracking, faces slower growth with a fertility rate of around 1.6 births per woman.

With the global population exceeding 8 billion, an estimated 385,000 babies are born each day, meaning roughly 21 million people share the same birthday as you, while birth rates vary widely—countries like Burkina Faso have a high fertility rate of 5.2 births per woman, whereas nations like Antigua and Barbuda, Argentina, the Bahamas, Canada, and Saint Lucia see lower birth rates, contributing to slower population growth or decline.

Japan has the world's oldest population, with a median age of 49 years and a rapidly declining population expected to shrink from 125 million to around 87 million by 2070, while Niger, with a median age of just 15 years and a high fertility rate of 6.7 births per woman, is experiencing rapid population growth, and Lebanon, facing economic and political crises, has seen its population decline by nearly 500,000 since 2019 due to emigration.