How Many People Have Ever Lived?


This article is an updated version of one of PRB’s most popular features: estimating the number of people who have ever been born. We first made this estimate in 1995 and have updated it periodically since then.


Comments

Post a Comment

Popular posts from this blog

Did dust from the Chicxulub asteroid impact kill the dinosaurs?

Image
"Dust might have been responsible for the deadly dinosaur-killing global winter that came after an asteroid slammed into Earth 66 million years ago, finds a study published on 30 October in  Nature Geoscience 1 . A team of geoscientists led by Cem Berk Senel at the Royal Observatory of Belgium in Brussels reinvestigated the aftermath of the impact that formed Mexico’s Chicxulub crater — a collision that wiped out the non-avian dinosaurs and much of life on Earth." For more details: https://www.nature.com/articles/d41586-023-03406-7
Read more

Sexing the Canvas: Art and Gender MOOC

Image
  What do paintings tell us about sex? How is art gendered? In this course we will study some of the world’s most beloved pictures guided by expert curators and art historians who step outside of the square, bringing a gendered reading to the masterpieces contained in the magnificent collections that we have been lucky enough to bring to the Coursera platform. In this course you will learn how: * Gender and sexuality is an integral part of the production and reception of works of art * To increase your understanding of paintings through theories of gender and sexuality * To understand key terms from gender-related theories of art history and museology * To recognise the operation of what is termed ‘the gaze’ and how it works in relation to paintings * Ideas about gender and sexuality can productively be employed in theorising art curatorial practices * To take the initiative in relating theoretical ideas about gender and sexuality to the reading and display of art and visual cultu...
Read more

The correlation between gut microbiome and atrial fibrillation: pathophysiology and therapeutic perspectives

Image
  Abstract "Regulation of gut microbiota and its impact on human health is the theme of intensive research. The incidence and prevalence of atrial fibrillation (AF) are continuously escalating as the global population ages and chronic disease survival rates increase; however, the mechanisms are not entirely clarified. It is gaining awareness that alterations in the assembly, structure, and dynamics of gut microbiota are intimately engaged in the AF progression. Owing to advancements in next-generation sequencing technologies and computational strategies, researchers can explore novel linkages with the genomes, transcriptomes, proteomes, and metabolomes through parallel meta-omics approaches, rendering a panoramic view of the culture-independent microbial investigation. In this review, we summarized the evidence for a bidirectional correlation between AF and the gut microbiome. Furthermore, we proposed the concept of “gut-immune-heart” axis and addressed the direct and indirect cau...
Read more