JUN GAO

Open-access scientific publication visualizing global problems and progress across health, poverty, climate change, energy, and education.

Open-access repository of 2.4+ million scholarly preprints in physics, mathematics, computer science, quantitative biology, and AI research.

The definitive global compendium of the world’s most wondrous, curious, bizarre, and esoteric places, foods, and hidden histories.

Random Google Street View teleportation generator and the birthplace of the viral MapCrunch Airport Game.

Interactive armchair travel portal offering virtual walking tours, driving cameras, flight simulations, and geography guessing games worldwide.

Serene community platform allowing you to open a new window and gaze out of someone’s window somewhere across the world.

The world’s open, community-built geographic database, providing free editable vector map data to millions of global applications.

Renowned digital archive containing over 150,000 high-resolution historical maps, maritime charts, globes, and atlases from the 16th to 21st century.

Search engine and historical geography portal indexing hundreds of thousands of digitized antique maps from world-class libraries.

Interactive geographic comparison tool that lets you drag countries across the globe to reveal their actual size without Mercator map distortion.

Dynamic real-time counters visualizing the scale of global digital activity, Google searches, tweets, videos, and internet traffic.

Global real-time statistics counters tracking world population, economy, health, environment, food, energy, and media per second.