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CyberNet WrapUp presents several excellent articles.

Low light levels make night photography a challenging yet rewarding subject. The best results require specialized equipment, like SLR cameras, tripods, cable releases and flashguns. After sunset, the everyday world is magically transformed, and city buildings, fireworks, thunderstorms and the northern lights all become popular subjects. We present 60 amazing examples of night photography, photos, created by some hard-working and dedicated photographers. Take a look at their websites and portfolios, and you'll find some links to how-to articles about night photography at the bottom of the post.

Photos taken with a camera do not represent a single moment of time. Due to technological constraints these shots stand for some scene over a brief period of time. This time frame depends on the camera's shutter speed. In motion blur, any object moving with respect to the camera will look blurred or smeared along the direction of relative motion. Motion blur is frequently used to show a sense of speed. You can artificially achieve this effect in a usual scene using cameras with a slow shutter speed. Also Adobe Photoshop can be used for this purpose, though sometimes images may look unnatural and unprofessional. You may want to take a look at resources provided in the end of the article - they show how one can add the motion blur effect in photos.

Probably the most sought-after surfing experience is the tube ride (a.k.a. "getting barreled"). A tube ride occurs when the top of the wave pitches over the surfer so that he or she is completely enclosed in an oval space behind the curtain of falling water. Inside the "green room," you are hurtling through a tunnel of water and the only way out (without wiping out) is straight through the opening in front of you. Hollow waves are foot-for-foot the most powerful variety of breaking wave, and good tube riding is really difficult. It requires timing, experience, and skill. The video shows us some world-class surfers making it look easy!

The Department of Defense has put out a call: design a pack of robots. A so-called Multi-Robot Pursuit System would be used to "search for and detect a non-cooperative human subject." Each robot has to weigh 100 kilograms or less, act autonomously (with a human squad leader), negotiate obstacles, and provide immediate feedback. The robots would report back to a human operator, and defer to that human when the robot AI determines that a "difficult decision" is required. The first phase of development is to create the sensors for detecting humans and to conduct feasibility experiments. Then comes the building of a prototype with fully functional sensors. At that point, a third phase would try to establish whether a pack of such robots -- about three to five in number -- could realistically be used for missions involving, according to the proposal, "search and rescue, fire-fighting, reconnaissance, and automated biological, chemical, and radiation sensing with mobile platforms."

Check out these cave crystals a thousand feet below the Mexican desert!!

Almost everyone has a tendency to imagine the mind continuing to exist after the death of the body. Even people who believe the mind ceases to exist at death show this type of psychological-continuity reasoning in studies. Rather than being a by-product of religion or an emotional security blanket, such beliefs stem from the very nature of our consciousness.