Human bones are so strong that it is a wonder that they ever break! Bone can bear a load, 30 times greater than brick c…
Would not it be wonderful if people who have lost an arm or leg, or just a finger in an accident, could just grow a new…
Even before the baby is born, watching his parents, we can predict many of the biological features that it will have. …
If we get thirsty and we have no opportunities to drink something, we feel such a great thirst that we forget about eve…
To live and work the human body needs energy, which is obtained by burning the food we eat. The result of the combust…
Among the tribes of southern Africa an instrument similar to xylophone holds the chief place in festivals, and is playe…
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