When we sleep, our body prepares itself for some changes. Most of the hormones and chemicals are produced in our body while we are asleep. Our body enters the phase of Rapid Eye Movement (REM) which is also known as the paradoxical sleep or...
In the southern Mexican state of Chiapas, the ruins of a 16th century colonial church have re-emerged from a reservoir due to the lack of rain. A severe drought has affected the Grijalba river, which feeds the Nezahualcoyotl reservoir, dropping the...