A mesmerizing look at the programming that’s gone into creating Twitter.

Twitter Code Swarm from Ben Sandofsky on Vimeo.

In a demo that drew gasps at TED2010, Blaise Aguera y Arcas demos new augmented-reality mapping technology from Microsoft.

A window of opportunity is opening for solar power in the Midwest. The Environmental Law & Policy Center is working to ensure that we seize this opportunity promote solar power development that creates new jobs, spurs economic growth and helps to solve our global warming pollution problems.

Why the time is right to ramp up solar power in the Midwest

Video of Houston Police secret aerial drones

Top 10 Flash Mobs of 2009

How to Destroy the Book by Cory Doctorow

ScienceHack is a unique video search engine for science videos. Every video is screened and approved based on accuracy and quality by scientists.

For students and teachers, the Google Docs collection provides a streamlined, collaborative solution to writing papers, organizing presentations and putting together spreadsheets and reports. But besides the basic features, there are lots of little tricks and hacks you can use to make your Google Docs experience even more productive. Here are 100 great tips for using the documents, presentations and spreadsheets in Google Docs.

100 Great Google Docs Tips for Students & Educators

10 Most Amazing Google Search Tricks

15 Free Guides That Really Teach You USEFUL Stuff