Search results
Results from the WOW.Com Content Network
Dermatophagia (from Ancient Greek δέρμα — lit. skin and φαγεία lit. eating) or dermatodaxia (from δήξις, lit. biting) [3] is a compulsion disorder of gnawing or biting one's own skin, most commonly at the fingers. This action can either be conscious or unconscious [4] and it is considered to be a type of pica.
Based on an analysis of 55 human mitochondrial genomes (mtDNAs) of hunter-gatherers, Posth et al. (2016) argue for a "rapid single dispersal of all non-Africans less than 55,000 years ago." By 45,000 years ago, modern humans are known to have reached northwestern Europe. Genetic reconstruction Mitochondrial haplogroups
In world demographics, the world population is the total number of humans currently living. It was estimated by the United Nations to have exceeded eight billion in mid-November 2022. It took around 300,000 years of human prehistory and history for the human population to reach a billion and only 218 years more to reach 8 billion.
The list of organisms by chromosome count describes ploidy or numbers of chromosomes in the cells of various plants, animals, protists, and other living organisms. This number, along with the visual appearance of the chromosome, is known as the karyotype, [1] [2] [3] and can be found by looking at the chromosomes through a microscope.
This list of genocides includes estimates of all deaths which were directly or indirectly caused by genocides that are recognised in significant scholarship as genocides. It excludes mass killings which have not been explicitly defined as genocidal, but called mass murder, crimes against humanity, politicide, classicide, or war crimes, such as the Thirty Years' War (4.5 to 8 million deaths ...
Most launches from Earth. 10 launches. Frederick W. Sturckow (USA), Space Shuttle and SpaceShipTwo (1998–2024) Note: The six SpaceShipTwo flights surpass the U.S. definition of spaceflight (50 mi (80.47 km)), but fall short of the Kármán line (100 km (62.14 mi)), the definition used for FAI space recordkeeping.
The amount of "meat" is equivalent to that of all 7 billion humans on the planet combined. Spiders could, theoretically, eat every single human on earth within one year. It gets worse. Those ...
Over 8,000,000,000 (estimated) Fertility rate. 2.27 (2021) Earth has a human population of over 8 billion as of 2024, with an overall population density of 50 people per km 2 (130 per sq. mile). Nearly 60% of the world's population lives in Asia, with almost 2.8 billion in the countries of India and China combined.