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One of the first things we learn in science is that matter can neither be created nor destroyed. But what about when matter and antimatter collide? I've been reading "The Elegant Universe"; and it talks about matter and antimatter colliding and destroying each other. So how does this all fit together? Has that law since been changed?

Over the past year I've noticed something regarding views of science from various professors at my school. It seems as if professors in the liberal arts and humanistic departments of school tend to view science as something that is dictated by culture. Seems like they feel that science is directed by culture. However, over in the science department, we're taught that science is above culture. Science is a "way of thinking", that is not bound by or limited to ones culture. How do you guys see it?

Remember when marriage meant committment? I don't, but I'm sure some of you do. I think alot of the way our brain's function has to do with basic biological needs. Mothers were equipped to care for young, and tend to be more emotion in order to provide more care for young. Men, however, tend to be the brutes, protecting the mother and his child. Though I'm sure culture has some to do with our differences. I think some couples can be "eternally" happy biologically and emotionally. Though our divorce rate seems to dictate this is not the norm. Who knows, maybe we'll get things right one day.

What do you mean by that :\

Hrm, good question. Some people claim its sacred geometry. If it WERE real, could it be they are trying to communicate with us somehow? However, I'm sure they could find a better way of communicating than crop circles. Perhaps its some sort of extra-(warning: massive spelling errors) terrestrial 'graffiti' (/errors). A sort of universal "John was here".

NewScientist has an article about biological alternatives to pacemakers. "Genetically-engineered heart cells may be able to replace the electronic pacemakers that hundreds of thousands of cardiac patients have transplanted each year, suggests a new study in guinea-pigs." Full article available here. Journal reference: Nature (vol 419, p132)

Has anyone heard of this? I remember reading something recently postulating that the speed of light is actually slowing down over time. Anyone know if there is actually any physical evidence for this? Also, if in fact, it were; what would be the implications?

You'd have to be pretty solid in geometry. Especially considering that you can't see the overall design you're making from the ground.

I saw something about super volcanoes on discovery the other night. Er, I didn't watch it, but I saw it advertised.

The more I see the designs on there, the less I think humans could have done it. Check out this.

Some more images of complex crop circles: source: http://www.lovely.clara.net

Haha. Well, some, if not most crop circles are definatly created by humans. I saw a show on discovery explaining how they did it with a simple device. It was basically a stick attached to strings on each side. The user would just bend the stalks over with the stick by stepping on it. However, some are complex designs, such that it would seem impossible for a human to make them so perfect (not saying its impossible, but it would take an expert). Heres some examples of obvious fakes: Notice how sloppy they are. http://www.lovely.clara.net is a great resource for crop circle information by year.

Suprisingly, researches have found that ice in the antarctic sea has risen since 1979. Hmm, what about this global warming mess?

We know the temperature and hence the frequency of radiation energy in the universe at quark confinement. The radiation from that moment of quark confinement is stretchd a million-millionfold. Its redshift is observed at 10^12. In other words, relative to our time, one million million of our seconds pass for one "universal second" to have passed. Is it possible that time on earth traveled faster than cosmic universe time? Say for us 15 billion years have passed, but on a cosmic scale, only a handful of days have passed?

I thought quantum mechanics finally put to rest the deterministic view..

Aman, you should make a thread explaining your particle theory; sounds interesting.

I always believed that if the universe were expanding, it had to have a beginning. But I suppose it could be cyclic. Expanding, then contracting. Even then, its hard to imagine a universe that has always been.

thanks aman

Sure, his name is J. Richard Gott.

Thanks man, nice read. I have a book called "Time Travel in Einstein's Universe". Very interseting books that explains all the current theories for and against time travel. I'm still a bit skeptical about traveling BACK in time. Perhaps its because I don't fully understand the physics behind it. I've come to terms with traveling forward in time, however.

I'm with you edward. I remember seeing a website one time that showed how you can also find all these codes in Moby Dick.

I dunno, theres some people that think the old testament (written in hebrew) has some sort of codes in it that predict everything.

Nice lie scorpio