Hannah Ritchie
Researcher at Our World in Data focused on environmental and public health data.
- a16z Just Launched a School
- Data Insight_ Thailand’s population may have already peaked
- The OWID Brief_ Peak population, child labor, drivers of deforestation, air conditioning, and more
- Data Insight_ Rich countries spend 60 times as much on healthcare per person as poor countries
- Data Insight_ Air conditioning is almost universal in the US and Japan — but not elsewhere
- Data Insight_ Indoor air pollution causes almost three million premature deaths every year
“By Hannah Ritchie”
“In my own country, the United Kingdom, Christianity is the most popular, and following no religion is becoming increasingly common, particularly among young people.”
“By Hannah Ritchie”
“I love that biodiversity loss gets its rare spot in the limelight. It's a problem that I think doesn't get enough attention.”
“By Hannah Ritchie”
“By Hannah Ritchie”
“By Hannah Ritchie”
“You don't hear about [the ozone layer] anymore... we fixed the ozone layer... we have fixed so many of the world's problems because we make a big deal about it.”
Source→“Read my article on how much energy data centers and artificial intelligence use — By Hannah Ritchie.”
“beef stands out: it has driven 41% of deforestation this century. Two-thirds of this has happened in Brazil”
“As Hannah Ritchie explains in a new article, if things turn out differently, this peak could come much earlier or later, depending on the country.”
Source→“As Hannah Ritchie explains in a new article, if things turn out differently, this peak could come much earlier or later, depending on the country.”
Source→“In Japan and the United States, AC adoption is almost universal; at least 90% of households have it.”
Source→“Read part one of my three-part explainer on heat deaths, and how they may change in the future — By Hannah Ritchie”
Source→“"Read my colleague Hannah Ritchie's article explaining how Britain built some of the world's safest roads"”
“By Hannah Ritchie”
“By Hannah Ritchie”
“How the growth of AI affects emissions depends not just on its energy efficiency and demand, but also on how clean the grids are that supply it.”
Source→“releasing paperback edition of *Clearing the Air* in September 2025”
Source→“**Hannah Ritchie** - **Description:** Researcher and author at Our World in Data - **Why mentioned:** Author of this Data Insight piece - **Quote:** Byline: *"By Hannah Ritchie"*”
“Byline reads 'By Hannah Ritchie'”
“My colleagues Hannah Ritchie and Tuna Acisu recently wrote about what countries with high stunting today can learn from Japan.”
Source→“Byline: "By Hannah Ritchie"”
“Almost no one has 'heat' or 'cold' written on their death certificate, but researchers estimate that sub-optimal temperatures lead to several million premature deaths every year — deaths attributed instead to cardiovascular disease, kidney disease, respiratory infections, and diabetes.”
“Total tobacco use in India dropped from ~50% of adults in 2000 to 24% in 2022, while smoking specifically fell from 19% to 10% — both roughly halved over two decades.”
“In poorer countries, infectious diseases are even more prominent. In rich countries, they are far rarer, and non-communicable diseases and injuries account for a larger share.”
“Our colleagues Sophia Mersmann and Fiona Spooner built a new interactive visualization. Hannah Ritchie wrote an article that uses the visualization to walk you through the data.”
“The chart shows death rates from lung, trachea, and bronchus cancers among men in a selection of high-income countries. Each shows a very clear rise and fall over the late 20th century.”
“By Hannah Ritchie”
“Article byline — "By Hannah Ritchie"”
“Read our article on why addressing this problem — increasing basic waste management — is key to tackling plastic pollution.”
“Hannah Ritchie — Researcher/author at Our World in Data. Bylined author of this data dispatch.”
“Before World War II, Japan focused on tackling infectious diseases…Stunting declined at a moderate pace. After the war, they tackled both disease and diet…This multifaceted approach made progress nearly three times faster.”
“South Korea…population is projected to more than halve by 2100, from 52 million today to just 22 million.”
“Global sales of combustion engine cars are well past their peak and are now falling... global sales peaked in 2017.”
“By Hannah Ritchie”
“By Hannah Ritchie”
“By Hannah Ritchie”
AI-extracted from podcast / newsletter / paper summaries. May contain errors.