let's check in with social media producer halling harmeli aregawi. . >> the story trending is young childrenoing studies, for money. i looked into it, but i was scared of the side effects. this is how people like 21-year-old alias are getting cash. he needed money to buy his girlfriend an engagement ring. he signed up to be a test subject for an antidepress able to. it didn't matter that it could cause suicidal tendencies, psychosis or insomnia. this is part of young people signing up to beginee pigs. some trials pay $2,000 or more. risks can be high, some subjects suffering life-long health effects. and viewer johnny warren says: and for everett: thank you both for joining the conversation. you can read more at the website. . >>> $800, a lot of money for a college student. >> coming up - the amazing story of an islamist extremist joining anti-jihadist. >> area 51 and aliens - we look at america's greatest conspiracy theories with author brad meltzer. and are older kids smarter than younger siblings. re# #a# #d# #y# ##fo# #r# ## >>> despite 12 years of the u.s. war on terror, islamist moves