Parents need to know that the series' gross-out factor might be disturbing for some very young kids -- one host eats raw seal, a cockroach's head is cut off to demonstrate its ability to continue to live and move without it, etc. There can also be apparent violence in demonstrations: for example, showing how police teams disarm a hostage taker or how martial arts movies are made. Although it's made clear that these are just demonstrations, they could be confusing to young viewers. Episode descriptions might help you determine whether a particular episode will work for the whole family.
Positive messages:Promotes curiosity and learning, but it's not always strictly educational.
Violence & scariness:Occasional simulated violence, for demonstration purposes -- like how cops break a door down, or how karate movies are made. Some gross-out segments, too (eating raw seal, cutting the head off of a cockroach). Nothing is ever gratuitous; it all has a purpose.
my 5 yr old would watch epidodes over and over again if he could
very educational and great for kids that are interested in understanding trivia and facts about how things work. Boy and girl co-hosts present good role models without gender bias