Science
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Anything Will Lase If You Hit It Hard Enough
A pedantic guide to the physics of lasers, featuring gin, Jell-O, and peacocks, explaining how almost any material can b…
Apartment Birds
A live collage of the birds heard from one apartment window, identified by sound and shown by hour, week and species, wi…
APHA Science Blog
News and updates from the UK's Animal and Plant Health Agency on its science, covering animal disease, plant health, and…
APOD: Water Ice in a Martian Crater
An Astronomy Picture of the Day showing a patch of bright water ice sitting in a crater on Mars, captured by Mars Expres…
Apollo 11 vs USB-C Chargers
A fun look at how the Apollo 11 Guidance Computer stacks up against a modern USB-C charger, with side-by-side numbers on…
Apollo 17 in Real-time
Relive the last crewed Moon landing minute by minute, with every transcript line, mission audio, photos and TV footage s…
Apollo 17 in Real-Time
A real-time interactive journey through the last landing on the Moon, letting you relive every moment of the December 19…
Apollo Digital Image Archive
A digitized collection of thousands of original photographs taken by astronauts during the Apollo program, preserved at…
Apollo XI Suiting Up Sketches
Paul Calle's pencil sketches drawn on launch morning in 1969 as Armstrong, Aldrin and Collins ate breakfast and suited u…
Apollospace
A gallery of nearly 20,000 restored, high-resolution in-flight photographs taken by astronauts during the Apollo lunar p…
Appropedia
A sustainability wiki where people share practical knowledge on appropriate technology, renewable energy, water, housing…
AquaMaps
A tool that generates predicted distribution maps for thousands of marine species, from whales to reef fish, based on th…
Aquarium Stocking Calculator
A free calculator for planning a freshwater tank before you buy fish, checking stocking level, species compatibility, ta…
arachnoid.com
Paul Lutus's long-running personal site of science, math, astronomy and programming pages, with orbital modeling, classi…
Arbor Day Foundation
A tree-planting nonprofit offering a tree identification guide, hardiness zone maps, and advice on choosing and caring f…
ARC-AGI-3
An interactive reasoning benchmark of small novel games that humans can play and AI agents try to beat, testing how well…
Archaeology Data Service Blog
The blog of the Archaeology Data Service, covering digital archives, research data and projects that support the teachin…
mediterraneanworld.wordpress.com
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Archaeology of the Mediterranean World
An archaeologist's long-running blog on Mediterranean and North Dakota archaeology, digital methods, 3D modeling, teachi…
Archaeology Southwest
A nonprofit's site on preservation archaeology in the American Southwest, with articles and research on ancient places a…
Archimedes' Cattle Problem
The famous ancient puzzle about the Sun god's cattle in full English statement, with solution pages and history of the e…
Are You Living in a Simulation?
Nick Bostrom's original 2003 paper laying out the simulation argument, the reasoning that made 'we might be living in a…
Are You the One Is Free Money
A reality-TV-loving husband shows how simple information theory and probability can crack the dating show Are You the On…
AreoBrowser
An interactive explorer of Mars that lets you pan across martian terrain and browse millions of rover photos from the Pe…
Argo Program
Scripps Institution of Oceanography's public page on the global fleet of robotic floats that continuously measure ocean…
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