Where do birds go in the winter?

Here in Canada, winters are pretty cold I would like to know where do birds go in winter? do they hibernate? if so where?? I know a few (migratory birds) fly South, but what about the sparrows, finches, etc, etc Anticipated thanks for your replies Apis 11 years old

Is the Earth expanding and does the Sun have an orbit?

How can people be so sure that the earth is expanding? Also, if the Sun has an orbit what keeps it in its orbit?

How did God come into existence?

I am a hardcore Christian, and since I don’t believe in the universe being created by the big bang, I believe it was created by God. But, if it says in the bible that God has no beginning and no end, but He would HAVE to be either ‘created’ or come into existence SOMEHOW. How [...]

Why do animals and humans eat different foods?

Why is it that some foods for humans aren’t good for other mamals and animals? Andrew Ford

Would you collect more rain on the windscreen of your car if you were moving or if you were still?

Would you collect more rain on the windscreen of your car if you were moving or if you were still? Andrew Ford

Could you swim under Australia?

Is it possible to swim under Australia? I mean islands are not connected to the core of the earth so you could actually swim under them. Well it isn’t possible because islands are like upside down mountains but… Basically, is Australia attached to the core like all other countries or is it an actual island? [...]

Is there a limit to how fast a man can ever run?

Given that Olympic World Records are constantly being beaten, is there actually a limit as to how fast a man can ever run? Paul Warner

How does a helium balloon’s flight compare to a plane’s?

If you were travelling in an aeroplane at say 500mph at 25,000 feet, and next to you was a small floating balloon of helium which was in mid air and not touching anything (and assuming nothing interfered with the balloon) would the balloon remain next to you throughout the journey or would it end up [...]

Is there a tangible thing called ‘information’?

Hi, I’m no scientist but I’m very interested in big questions. The one that I’m currently pondering is the origin of life. From what I’ve read already scientists seem to hide behind a rather vague and non-descript reference to the role of information. But what is information? In the way scientists refer to it, it [...]

How potent is stomach acid?

How potent is stomach acid? If it’s really acidic, why doesn’t it burn through your stomach and intestines? And why doesn’t it burn, say, the floor, if you throw up? What CAN stomach acid burn through? Can it be compared with any other acid? How is it produced? Anna, 15-24