Tech Stocking Stuffers: 33 awesome gifts under $50
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Our latest longform features, product reviews, and buying guides. A tech enthusiast must-read.

Optogenetics: A Virtual Reality System for Controlling Living Cells

Our brains communicate with electrical and chemical signaling, but scientists have discovered that light stimulation could hold potential keys to manipulating neuronal communication pathways that influence motor control, sensory perception, memory, neurochemical production and mood -- or cellular virtual reality, as a report from the Journal of Cell Biology describes it.

4th-Gen Core i7 vs. 8th-Gen Core i7: Is It Worth the Upgrade for PC Gamers?

After our recent feature comparing Intel's 8th-gen Core series against AMD's Ryzen processors, many of you have been asking us to get some older chips into the mix, with particular interest in seeing how Haswell-era processors hold up against Intel's latest offerings. We're also curious to see how well the Core i7-4770K has aged -- we first tested this CPU in June 2013.

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