merna inherited flat feet shortsightedness and clear skin from her parents. and luis mentions green eyes and yellow teeth which he calls dog teeth blond hair and caucasian skin thanks to all of you for writing in. before we're born it's pretty clear what we're going to look on. foot over the course of evolution our genes have adapted to the environment. one study says that our nose shape has adapted to the climate with warm humid areas leading to a wider nostrils and a cold climate to more narrow ones but are we as good as it gets. there are plenty of features that don't make us look so good. human beings some of us think we're great at the pinnacle of evolution. really. we might have high performance springs for instance but they're also extremely dependent on oxygen a construction flaw that can quickly become fatal. our evolution through the eon says that down our eyes with a blind spot and they see the world upside down our brains have to invert the image to compensate. and our jaws shrunk so starkly over time they've become too small for all of our teeth

thank you. >> and merna, before we answers, i want to say it doesn't matter how old you are, you can always go back to school. knowledge is always a good thing to have. now, go ahead and answer her question. >> reporter: so it is, and universities have been building out and building out infrastructures for online education for the last several years. if you're thinking about places like southern new hampshire university or you're thinking about arizona state university which has gone and grown into this 100,000 student enterprise and the way they're thinking about access and affordability and also online education is rather remarkable and often lauded by college experts, but they're also trying to figure out now how to have that classroom experience of a program like chemistry or of a program like physics or something of the sort. and make sure that that online experience is as robust as the experiences in the classroom. >> we have one of our online viewers wants you to address how the student loan issue affects college attendance. let's talk specifically about the education deserts.

i get up ready there in the morning and i get the movie ready and i when i eat i buy merna. og this is the story of a fruit that changed the destiny of central america and gave its name to republics it became the toy of support came the symbol of all that's wrong with american capitalism. this is a tale of economics and politics a story about globalization. this is the story of a fruit a simple frint the banana. her. it all began in 1871 when the government in costa rica asked a certain minor cooper keith from new york to build a railway it was to link the caribbean coast to. the hype not change through the jungle. but nothing went as planned. the jungle was merciless. there were accidents scorpions malaria 4000 men died and just 40 kilometers of railway track were completed. and after a stock market crash those dried up. costa rica could no longer pay its debts the railway remained on finished myna faced financial ruin. he didn't know then that fortune was right there at his feet in humid soil of the jungle in this simple fruit that fed his workers the banana. the. first th