dj illa jams! wassup, illa jams? [music playing] rachel: that's my song, illa jams!et to the fun, let's get serious. a program conducted in 2008 at eight high schools found that 13% of about 3,000 students tested positive for an std according to the dc department of health. sierra: when i hear statistics like that, i wonder: what's the problem with my peers? and where can we begin to try and find a solution? tyler: hey, good point, sierra. i mean, i feel the same way. arguably the first step is educating students. let's watch a video about what some dc students are doing to create solutions to this problem. teen male: she said she's close to the edge. life's pushed her too hard, and if god's really there, this would be time for one of those miracles. she just found out she's hiv positive. mom kept it a secret, afraid that if the truth got out, job will be lost and electricity will black out. went to the funeral for her little brother two days ago. met heaven's gate at eleven years old. pneumonia took his body but couldn't keep his soul. i saw sister at the funeral, a

earthwise gurr illa warriors is next. for more check us out online. [[voiceover]] in today's technological age, is heavy manual labor disappearing, or is it just becoming invisible? physical work was once celebrated with hymns of praise. but workers today must be content that their hard work is better than no work at all. this series looks at the state of physicark

there are many other valiant efforts to save lyons, elephants, rhinos, hippos, gore illas and other animals coming up - has proof of alien life been found. we talk science, space science next. >> space scientists have been busy, especially over the past couple of weeks - from finding proof of water on mars to the voyager becoming the first spacecraft to enterinterstellar space to scientists saying they have discovered proof of alien life after collecting dust from the stratosphere. they found fragments of single-cell algae. the question is where do the dyotons come from. >> joining me from the franklin institute, derek pitts. >> what are the chances that these dio tonnes are from another planet. not everyone agrees on this discovery. it would be wonderful if there was more concrete evidence about the dyotones coming from space. they are, of course, tiny single-cell, i believe, creatures that are found in sea water here on the planet's surface, here on the the earth. if you read the article, there was one piece of a dyatone found in the material collected by the scientists that wrote the rep