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The Best of Science & Mathematics

Will a hot air balloon still rise if the surrounding air is the same temperature? Asked by pingpong - Physics
A balloon filled with hot air rises because of the force of buoyancy. That means the density of air inside is lesser than the surrounding air (because hot air expands thus density... More >
Best answer by Queen Bee
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What are the pros and cons of space research? Asked by Joshua M - Astronomy & Space
Pros: We learn more about the exact sciences (i.e. chemestry, physics, biology). Studying the contents of space gives us something to compare ourselves with and allows us to draw... More >
Best answer by habaceeba
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How did eyebrows evolve and what will they look like in a million years? Asked by Bookbabe1960 - Biology
Eyebrows have evolved as being important in the non-verbal communication process to each other. In a million years, the communication of eyebrows will hopefully be understood better, and... More >
Best answer by MrsDebra1966
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Why is color blindness more frequent in boys? Asked by Aroura - Biology
The reason is the gene is located on the X-chromosome. Since men only posses one X-chromosome they are more likely to be affected as they only need to have 1 defective gene. Considering... More >
Best answer by KRISTY
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Is Earth's solar eclipse unique in the solar system? Asked by George D - Astronomy & Space
Not possible on Mercury or Venus as they don't have any moons. Phobos and Diemos, the two Martian moons, are quite tiny (less than 50 kilometres in diameter) and it seems unlikely that... More >
Best answer by brucebirchall
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What's a good telescope for newbies in stargazing? Asked by debernator11 - Astronomy & Space
Hi there... I've been fascinated with astronomy for a while now, and just moved to the arizona desert... beautifully dark night sky almost every night. I wanted to start with a... More >
Best answer by dbs1226
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