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"At the Exploratorium, we dissect cow eyes to show people how an eye functions, and look at the parts that make up an eye. In this video, one of our staff Explainers demonstrates a cow eye dissection."

"NASA's Spacecraft 3D is an augmented reality (AR) application that lets you learn about and interact with a variety of spacecraft that are used to explore our solar system, study Earth, and observe the universe. Using a printed AR Target and the camera on your mobile device, you can get up close with these robotic explorers, see how they move, and learn about the engineering feats used to expand our knowledge and understanding of space. Spacecraft 3D will be updated over time to include more of the amazing spacecraft that act as our robotic eyes on the earth, the solar system and beyond! "

"In this edition of HowStuffWorks, we will enter the tiny world of light microscopes and examine the various technologies that let them expose what is otherwise undetectable to the human eye."

"Love the idea of a healthy high-fibre diet but not so keen on its after effects? Fear not. There's more to farting than meets the eye (or even the nose)."