33
POPSBecoming immortal A very interesting read! Of course, what are we going to do with eternity is not a medical question but rather philosophical and emotional. At least we will have time enough for love... For the quasi immortal humans of the future, nothing in this existence will look even remotely similar to the way we see things today.
12
POPSWorld-record Supercomputer Mimics Human Sight Brain Mechanisms Based on the results of PetaVision's inaugural trials, Los Alamos researchers believe they can study in real time the entire human visual cortex--arguably a human being's most important sensory apparatus. The ability to achieve human levels of cognitive performance on a digital computer could lead to important insights and revolutionary technological applications. Such applications include "smart" cameras that can recognize danger or an autopilot system for automobiles that could take over for incapacitated drivers in complex situations such as navigating dense urban traffic.
16
POPSBacteria make major evolutionary shift in the lab In the meantime, the experiment stands as proof that evolution does not always lead to the best possible outcome. Instead, a chance event can sometimes open evolutionary doors for one population that remain forever closed to other populations with different histories.
25
POPSThinking ahead: Bacteria anticipate coming changes in their environment To test this idea, the researchers exposed a population of E. coli to different temperatures and oxygen changes, and measured the gene responses in each case. The results were striking: An increase in temperature had nearly the same effect on the bacterium's genes as a decrease in oxygen level. Indeed, upon transition to a higher temperature, many of the genes essential for aerobic respiration were practically turned off. To prove that this is not just genetic coincidence, the researchers then grew the bacteria in a biologically flipped environment where oxygen levels rose following an increase in temperature. Remarkably, within a few hundred generations the bugs partially adapted to this new regime, and no longer turned off the genes for aerobic respiration when the temperature rose.
26
Clips
Latest Pops
Latest Comments
Most Pops
Tags
Print
Save
Turn on live update