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DNA smeared on a rocket survives re-entry and tells of life's origins
Well, would you look at that: scientists have discovered that DNA can make it through the hellish ordeal of atmospheric re-entry after all. German and Swiss researchers dotted a rocket's grooves and screw heads with fragments of genetic blueprints to see how they'd fare in situations that could've led to the appearance of life on Earth. Scientific American notes that the 13-minute rocket trip might not perfectly represent how DNA might actually travel from one celestial body to the next (that'd be by meteor), but there is purpose here. What the experiment suggests is that even if the meteor's been scorched, that the material can survive at higher temperatures than previously expected, and as such this paints a better picture of just how resilient DNA is. What's next? Pushing the limits further and seeing exactly what it takes to kill the double helix -- we're pretty sure at least one rock band is itching to find out. [Image credit: Getty Images/OJO Images RF]
Proportional VR experiment shrinks man down to rat size, lets us play games with rodents
Sure, you can always play catch with the dog, but what kind of game can you play with a caged rodent? Well, "find the poster," apparently. A team of researchers from Universities in Spain, Germany, Austria, England and the US have put together a virtual reality system designed to let humans interact with rats at the rodent's scale, challenging human participants to find and lead the rodent to a unmarked goal. According to a paper published in PLoS One participants were "beamed" into the rat's environment by linking a head-mounted display and joystick to a rat-sized telepresence robot. Human players were then treated to a proportionally accurate representation of the game arena. The rat was there too, tracked with an overhead camera and represented by a human avatar. Participants were tasked with coaxing their opponent in front one of three posters in attempt to sleuth out which one represents the "winning" position. When both players are in front of the correct mystery poster, a bell sounds and the game ends. The game was primarily created to test a scaled immersive virtual reality teleoperator system, but researchers are optimistic the technology could be used to observe animal behavior from a new perspective. Check out the setup in action after the break, or read on through to the source link below for a detailed description of how mankind and some of nature's smaller creatures can get along in a virtual space.
