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You Asked: How does a hydrogen generator work? --- Sepideh, Tehran, Iran Marshall Brain Answers... See more »

You Asked: When I let a balloon go, how high can it go? --- Timothy, York, Pa. Marshall Brain Answers... See more »

You Asked: What is the working principle of a DC motor? --- Sireesha, Tirupathi, India Marshall Brain Answers... See more »

Here is the setup. Take a clear plastic (or glass) drinking glass. Fill it with cool tap water. Let it sit on the counter for a couple of hours. In some cases you will come back to find dozens of small bubbles clinging to the inside of the glass. why? See more »

You Asked: When a brain transplant is performed, does the patient lose his or her memories? --- Abby, Shoreham, N.Y. Marshall Brain Answers: We are still a few years away from the first human brain transplant or head transplant, although there have been experiments in animals. The following videos are not for the weak-stomached, but they do show that experiments have been done in sustaining severed brains and heads, and even transplanting heads, for several decades... See more »

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