Weapons-grade plutonium has a half-life of 24,110 years..meaning any amount will take a really, really long time to disappear. A common way to deal with it is to bury it far from places where it can be found or irradiate anybody.
This post covers some of the more esoteric methods of marking that land, with the goal of still making the danger clear to whoever is still around in several thousand years. A lot of sci-fi type stuff, definitely a good read.
“This is the time for forward-looking research universities to invest scarce resources in computer science/computing—even at the expense of other engineering disciplines, if necessary—in order to ensure a vibrant, cohesive, and prominent computer science/computing presence and identity. This most certainly is not the time to scale back on computer science research and education.”—
J- There’s a little bit of misinterpretation here in that UF isn’t completely eradicating computer science. They are “restructuring” the department to move faculty away from research, forcing many out, and putting the degree program under the control of different colleges. In a state that can apparently afford to build a new $33 million state college based around STEM degrees (the new Florida Polytechnic) and that has agreed to give UF’s football program a raise that would cover the entire comp sci department, one has to wonder where the priorities sit.
The Ars Technica is definitely more factual. Read that one first for sure. Still, a lot of hullabaloo is going on on campus and it’s hard to tell anybody wanting to go into computer sciences to go here.
Tumblr is being stupid and not letting me post or answer your message, so I’ll just say that sounds like a great idea, and I’m interested in what the guy got wrong. He does seem rather inflammatory but since I’ve never even heard of that device before I can’t really comment. What is it he got wrong? To curious folks: look up The Japanese “SpeechJammer”.
Essentially, your brain listens to yourself speak to make sure everything comes out like it told it too. It’s why we are able to immediately catch ourselves when we misspeak. This device constantly records what it’s being pointed at, adds a slight delay, and sends those waves back. Your brain gets confused hearing your words come back a second time and tries to resend whatever you were supposed to be saying. Only effective up to 90ft, the reasons the two guys give for it is to shut people speaking out of turn or in quiet places. (PDF of their paper). The thing is, your brain doesn’t require feedback, it just likes it as a backup. So by covering your ears in any way it’s effect would be little to none. Or you can punch the kid pointing a sizable handheld speaker at you. It does not interfere with your consciousness, simply moving quickly toward or away from it would dramatically diminish its effect, as would a stylish pair of earmuffs. The idea that it would be used in Congress is laughable. The statement that it is “one of the most abominable creations in modern history” even more so.
Making the wheel was easy. It was the axle system that took forever. In fact, civilization had already developed metal tools before they perfected the wheel.
The invention of the wheel was so challenging that it probably happened only once, in one place. However, from that place, it seems to have spread so rapidly across Eurasia and the Middle East that experts cannot say for sure where it originated. The earliest images of wheeled carts have been excavated in Poland and elsewhere in the Eurasian steppes, and this region is overtaking Mesopotamia (present-day Iraq) as the wheel’s most likely birthplace. According to Asko Parpola, an Indologist at the University of Helsinki in Finland, there are linguistic reasons to believe the wheel originated with the Tripolye people of modern-day Ukraine. That is, the words associated with wheels and wagons derive from the language of that culture.