UC Berkeley scientists have recorded the first images ever generated by a human brain. Amazing. They exposed subjects to video images while recording visual activity in their brains. When they played the recorded data back they got images corresponding closely to what the subjects had just seen. What I notice about the images in the video is that faces seem to work the best. That is interesting on many levels. Perhaps facial recognition is so hard-wired into humans that we are able to generate those images more clearly than all others. This work opens the door to the ability to reconstruct imagery from dreams and memories. It’s a staggering achievement. Magnificent. I simply cannot wait to try this sometime.
Salman Khan teaches math and science via YouTube video lessons. It’s called Khan Academy. He teaches a wide variety of subjects including algebra, calculus, biology, physics, chemistry and statistics. He thinks everyone should be able to get an education for free and he does not think universities are doing it properly. The education model needs to be rethought and rebuilt. Many people think so and that’s why Kahn Academy has so many students and is attracting venture capital money. He’s getting more viewers than most university web sites. Here’s a PBS NewsHour piece about him:
Here’s a lesson on adding and subtracting fractions:
This is a good demonstration of an idea for helping in the Gulf BP disaster. I don’t know if the blowout preventer could withstand the downward force exerted upon it by the plug however. But there are certainly adaptations of this idea that might work if the blowout preventer were removed from the equation. The main point though is that kids are engaging in logical thinking about the problem. At this very moment, I would be willing to bet that the complete solution to the BP oil disaster is already available. It has been thought of and put somewhere. For sure. It simply needs to be found now.