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1Scientists have discovered that the sensory stimuli of our…

1Scientists have discovered that the sensory stimuli of our sleeping environment may intrude into our dreams. 2A particular odor or the telephone’s ringing may be instantly and creatively woven into the dream story. 3In one experiment, some researchers lightly sprayed cold water on dreamers’ faces. 4Compared with sleepers who did not get the cold-water treatment, these subjects were more likely to dream about water—about waterfalls, about leaky roofs, or even about being sprayed by someone.

1Small animals eat more in relation to their own size than l…

1Small animals eat more in relation to their own size than large animals do. 2For instance, a field mouse eats as much as its own body weight every day. 3That is, a one-ounce mouse will eat one ounce of food a day, or 100 percent of its body weight. 4However, an elephant that may weigh twelve thousand pounds will eat about six hundred pounds of food a day. 5As astounding an amount of food as that is to eat, it is still only 5 percent (or 1/20th) of the elephant’s body weight.

1Psychologists have observed that some babies cry much more…

1Psychologists have observed that some babies cry much more than others, and some are much more active than others. 2Some are cuddly, and some seem to dislike being picked up and held. 3Psychologists have also found that newborns are capable of expressing several basic emotions; for example, their faces show different expressions for surprise, distress, and disgust. 4And they have their likes and dislikes: In one experiment, babies only a few hours old showed pleasure at the taste of sweetened water and smell of vanilla, but made faces at the taste of lemon juice and the smell of rotten eggs. 5Through these findings, psychologists have confirmed what parents have always claimed to be true—that their babies seem to have distinctive personalities almost from birth.