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Topics /
Science & Space
The most popular blog posts about science & space on Hacker News. 2,419 posts.
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Safety of Nuclear Energy
Explore global data on nuclear energy production and the safety of nuclear technologies.
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Extreme poverty: How far have we come, and how far do we still have to go?
The world has made immense progress against extreme poverty, but it is still the reality for almost one in ten people worldwide.
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Per capita CO₂ emissions Over Time
An interactive visualization from Our World in Data.
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For a Quick Exit, Just Block the Fire Door
Learn about public engagement activities from the American Physical Society
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Nature's Decline Unprecedented; Species Extinction Rates Accelerating (2019)
United Nations Sustainable Development Goals - Time for Global Action for People and Planet
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Trust: Our World in Data
Trust is essential for effective cooperation. How does trust vary between different societies and locations and what matters for levels of trust?
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TED 2009: How to Grow Your Own Fresh Air
With only three varieties of plants, we can “grow our own fresh air” indoors, to keep us healthy. Learn more about these plants.
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Literacy
Being able to read and write opens up the world of education and knowledge. When and why did more people become literate? How can progress continue?
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Famines
In many parts of the world famines have been common in the past. What causes famines? How can famines be averted?
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Climate change
WHO fact sheet on climate change and health: provides key facts, patterns of infection, measuring health effects and WHO response.
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U.S. students’ academic achievement still lags that of their peers in many other countries
American students continue to rank around the middle of the pack, and behind many other advanced industrial nations, in international assessments of math, science and reading.
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Arguments from Global Warming Skeptics and what the science really says
Examines the science and arguments of global warming skepticism. Common objections like 'global warming is caused by the sun', 'temperature has changed naturally in the past' or 'other planets are warming too' are examined to see what the science really says.
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Urbanization
Around 80% of the world’s population lives in cities, towns, and suburbs rather than rural settlements. How has this changed, and what does urbanization look like across the world today?
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Wrong Again: 50 Years of Failed Eco-pocalyptic Predictions
Modern doomsayers have been predicting climate and environmental disaster since the 1960s. They continue to do so today. None of the apocalyptic predictions with due dates as of today have come true. What follows is a collection of notably wild predictions from notable people in government and science.
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COMMENTARY: Masks-for-all for COVID-19 not based on sound data
Dr. Brosseau is a national expert on respiratory protection and infectious diseases and professor (retired), University of Illinois at Chicago. Dr. Sietsema is also an expert on respiratory protection and an assistant professor at the University of Illinois at Chicago.
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Life Expectancy
People are living longer across the world, but large differences remain. Explore global data on life expectancy and how it has changed over time.
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Economics of Nuclear Power
Nuclear power is cost competitive with other forms of electricity generation, except where there is direct access to low-cost fossil fuels. In assessing the economics of nuclear power, decommissioning and waste disposal costs are fully taken into account.
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Deforestation and Forest Loss
Explore long-term changes in deforestation and deforestation rates across the world today.
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Who has contributed most to global CO2 emissions?
Our impact on climate change is not just about emissions that occur today. How much we emitted in the past also matters.
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A number of countries have decoupled economic growth from energy use, even if we take offshored production into account
Energy use is declining in some countries, despite economic growth.
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Half of the world’s habitable land is used for agriculture
More than three-quarters of global agricultural land is used for livestock, despite meat and dairy making up a much smaller share of the world's protein and calories.
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Chernobyl: the true scale of the accident
A total of up to 4000 people could eventually die of radiation exposure from the Chernobyl nuclear power plant (NPP) accident nearly 20 years ago, an international team of more than 100 scientists has concluded.
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What was the death toll from Chernobyl and Fukushima?
When we think of nuclear safety, two accidents often come to mind: Chernobyl and Fukushima. What was the death toll and impact of these disasters?
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Air pollution
Air pollution kills an estimated seven million people worldwide every year. WHO data shows that 9 out of 10 people breathe air containing high levels of pollutants. WHO is working with countries to monitor air pollution and improve air quality.
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Pfizer and BioNTech Conclude Phase 3 Study of COVID-19 Vaccine Candidate, Meeting All Primary Efficacy Endpoints
Primary efficacy analysis demonstrates BNT162b2 to be 95% effective against COVID-19 beginning 28 days after the first dose; 170 confirmed cases of COVID-19 were evaluated, with 162 observed in the placebo group versus 8 in the vaccine group Efficacy was consistent across age, gender, race and ethnicity demographics…
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Masking lack of evidence with politics
The increasing polarised and politicised views 1 on whether to wear masks in public during the current COVID-19 crisis hides a bitter truth on the state of contemporary research and the value we pose on clinical evidence to guide our decisions.