Science
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Green Living Ideas
A broad green living site with ideas for conserving and reusing in over 200 ways, covering home energy, building, food,…
Greenland - NASA Sea Level Change
A NASA vital-signs page charting how much ice the Greenland ice sheet loses each year, measured by gravity satellites, a…
GrepMed
An image-based medical reference where doctors share algorithms, checklists, and clinical guidelines as quick visuals yo…
Grid Town
A free browser strategy game where you keep a growing town's lights on, juggling solar, wind, demand and costs to reach…
Grid Watch
A live dashboard tracking exactly how much electricity Britain is generating right now, broken down by gas, wind, solar,…
GridMaths
Visual math lessons with animations such as sine waves drawn from circles, plus videos and little tools for learning mat…
Gridwatch
A live dashboard of Ontario's electricity grid, showing power generation by source so you can see where your power comes…
Grist
An independent nonprofit newsroom covering climate change and the environment, with reporting on energy, policy, food, a…
Groundhog-Day.com
A data site cataloging North America's prognosticating animals and their yearly weather predictions, for fans of Groundh…
jeremykun.wordpress.com
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Groups: A Primer
A patient, example-rich introduction to group theory from the Math and Programming blog, aimed at readers meeting abstra…
Guedelon Castle
The official site of Guedelon, where craftspeople have been building a real thirteenth-century castle from scratch with…
Guerrilla Gardening Seed Bombs
A guide from the guerrilla gardening movement to making and throwing seed bombs - balls of clay, compost and seeds for g…
Guide to Attending a Space Launch
A practical, illustrated guide to watching a rocket launch in person: which launch sites you can visit, viewing spots, c…
Gunswap Juggling
A 3D juggling simulator that animates any siteswap pattern you type in, with adjustable props, beat timing and hand move…
Gunter's Space Page
An exhaustive independent database cataloging nearly every satellite, rocket, and space mission ever launched, with tech…
Gwern.net
Gwern Branwen's vast collection of meticulously footnoted long-form essays on AI, statistics, psychology, and self-exper…
Hackaday | Fresh Hacks Every Day
A daily blog and community covering hardware hacks, electronics projects, and maker culture with detailed DIY engineerin…
Hacker Fab
Open documentation from a project building the first open-source semiconductor fab, covering lithography steppers, spin…
Hacking Super Mario 64 Using Covering Spaces
An illustrated essay applying covering spaces and hyperbolic geometry to Super Mario 64, with visualizations of the univ…
Hacking the Timex m851
Tavis Ormandy digs into a Timex data-link watch that receives data from a computer screen's flashing bars, and reverse e…
Hadrosaurus.com
The story of how the first dinosaur skeleton ever found was dug up in Haddonfield, New Jersey in 1858, with historical p…
Halcyon Maps
Martin Vargic's dense, witty infographic maps and posters, from the famous Map of the Internet to the Exoplanet Zoo and…
Half Cat Rocketry
A guide that lowers the barrier to entry for amateur liquid rocket engines, with write-ups on how hobbyists design, buil…
Half-Earth Socialism
A planetary planning game where you decide how to feed humanity while protecting biodiversity and responding to the clim…
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