"It must have been some pretty damn rough climate change to kill of the dinosaurs; they saw plenty of that during 160 million years of existence, and took everything really well."

I personally don't think a climat change alone could have killed all of those creatures.

Here's another interesting theory. Some people have suggested that an influx of neutrinos could have killed the dinosaurs by causing cancer, but then, how would crocodiles have survived? Maybe their skin protected them. And smaller animals could have sheltered themselves from the sun, like Lepidosauromorphs, Bids, and mammals.
from Tim M., age ?, ?, ?; November 27, 2002

It must have been some pretty damn rough climate change to kill of the dinosaurs; they saw plenty of that during 160 million years of existence, and took everything really well.
from da masta, age ?, ?, ?; November 26, 2002

I'm still here and always will be but I thought that I would only post when there are enough posts from other people.

Regarding the theory, I'm still happy with the "combination" idea we had months ago.

And who else has heard of that new mummified dinosaur that is now in Phillips County museum in Montana? Apparently it's only the fourth dinosaur fossil to be classed as a mummy, and the skeleton is 90% covered in soft tissue, including skin, scales, muscle, and foot pads. I admit I'm quoting loads from Focus, but I couldn't be asked to put it in my own words. It's a Brachylophosaurus and has been called Leonardo.

Pretty cool.
from da masta, age ?, ?, ?; November 26, 2002

I've heard theories that sate that the non Avian dinosaurs died as a result of global warming, or in other words, climate change. Well, the temperature was only cooling slightly at the end of the Cretaceous anyway. Besides, what could have caused such a drastic climate change? Our atmosphere works constantly to even out the heat in the air. It is distributed around the globe as the Carbon Dioxyde in the air acts as an insulator to keep some of the warmth in. This is a greenhouse effect. Today, the rise in the global averag temperature is due to humans emitting high levels of CO2 into the air. This enhances the greenhouse effect. There was no such emission of CO2 in the dinosaur era. One could argue that Volcanoes, which emit 110 million tonnes of CO2 every year. But Volcanoes also create the haze effect, which is when the high levels of Sulfur Dioxyde emitted during an eruption mix with the water that is already in the air to creat sulfuric droplets! . These droplets scatter incoming rays from the sun, thereby REDUCING the global average temperature. And since there was much volcanic activity in the late cretaceous, maybe the eruptions casued a cooling of the air. Differences in temperature could also be caused by the sun, of course. Large volcanic eruptions, such as Mt. Pinatubo in 1991, can also severely deplete the ozone layer. Over the Antarctic, the Ozone layer was depleted by 50%, because of Pinatubo's eruption. This ozone depletion would only last a couple of years at maximum, but if there was enough eruptions at a time, the ozone hole could be large enough and could last long enough to kill much of the life on Earth.

Since nobody has posted since I did a week ago, I'd like to ask you guys for some other theories about dinosaur extiction, or about how climat chage could have effect dinosaurs.
from Tim M., age ?, ?, ?; November 21, 2002

Doesn't anybody post here anymore
from Tim M., age ?, ?, ?; November 14, 2002

"Another thing, I've just subscribed to _Focus_ (the magazine of science and discovery,) so I should be more on top of what's going on in the world now"

Sounds good. I've heared of Focus before but I've never read an issue. I get Scientific American and National Geographic.
from Tim M., age ?, ?, ?; November 11, 2002

"Is it very popluar in the US too?"

(chuckles) Is it popular? Is it popular? When the movie came out, people ligned up for hours just to get tickets. You have to get a reservation for a copy of one of the books months in advance! There's even a Coca-Cola advertisement "saluting Harry Potter for reigniting the love of reading in youths". Yes, it's very popular here.
from Tim M., age ?, ?, ?; November 11, 2002

Another thing, I've just subscribed to _Focus_ (the magazine of science and discovery,) so I should be more on top of what's going on in the world now!
from da masta, age ?, ?, ?; November 11, 2002

Who here has seen the movie signs? It's quite creepy.

I also thought I'd ask about Harry Potter. I'm not a huge fan but I quite like the books. Is it very popluar in the US too?
from da masta, age ?, ?, ?; November 11, 2002

"And I was away because of my Birthday. I had tons of stuff to do"

In my school, the administrations tends to stick to the policy of overloading the students with homework right before holidays, so I had a lot of stuff to do also.
from Tim M, age ?, ?, ?; November 6, 2002

"In England Halloween is popular; I can't get to sleep sometimes because of those... annoying, fireworks. And the bell kept ringing because all these kids where going round trick or treating. Last year my mum kept giving them stuff but this year I persuaded everyone not to deplete our sweets on complete strangers. I may sound like a miser because of this but I wanted those sweets for... myself, mostly. I did have my Birthday you know. On the 29th."

There are rarely fireworks on Halloween here. Mostly, we just leave some candy outside on the front porch for people to take, but, given the remote location of our house and the absence of kids in the neighborhood, most of the candy is left for us to eat.
from Tim M., age ?, ?, ?; November 6, 2002

And I was away because of my Birthday. I had tons of stuff to do.
from da masta, age ?, ?, ?; November 6, 2002

In England Halloween is popular; I can't get to sleep sometimes because of those... annoying, fireworks. And the bell kept ringing because all these kids where going round trick or treating. Last year my mum kept giving them stuff but this year I persuaded everyone not to deplete our sweets on complete strangers. I may sound like a miser because of this but I wanted those sweets for... myself, mostly. I did have my Birthday you know. On the 29th.
from da masta, age ?, ?, ?; November 6, 2002