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YouTube is a place to discover, watch, upload and share videos.

Daily distractions brought to you by Herman Yung.

Technology, tutorials, science, news and social issues for geeks, by geeks! We make technology sexy.

HowStuffWorks Videos cover your favorite topics: cars, electronics, travel, recipes, health and more. Watch free, high-quality, educational videos onl

Vimeo is a respectful community of creative people who are passionate about sharing the videos they make. We provide the best tools and highest quality video in the universe.

Stock video footage, sound effects, and production music, royalty-free at the lowest prices. Search and download instantly, and get a free stock video clip and free sound effects file every week!

Your ultimate online portal to the future. Reporting on what

Special Heart Valve Surgery Book About Heart Valve Replacement, Heart Valve Repair, Leaking Heart Valve Symptoms, Ross Procedure, Aortic Valve Replacement, Mitral Valve Prolapse, Aortic Stenosis, Mitral Valve Replacement

The National Geographic Channel is the home for the best animals, nature, history, science, engineering, people, places, and exploration content on your television, PC, and mobile device.

Mayo Clinic — Comprehensive medical diagnosis and treatment; locations and services; request an appointment.

Instructables is the Biggest How To and DIY community where people make and share inspiring, entertaining, and useful projects, recipes, and hacks.