"Hello, weakling!" Image: Pressm...  ...That's right: a new study by researchers from Purdue University showed that rather than being courteous, you are...  ...g the door open for him. In this experiment, Purdue psychologists Megan McCarthy and Janice Kelley po...

We’ve all heard of people doing it, we&rsquo...  ...h. According to scientist from China Agricultural University and Purdue University “compounds in urine mix with chlorine to fo...