While we believe language sets us apart, scientists are finally beginning to unravel the codes of animal communication. Some animals demonstrate they can learn our language, but the question now is whether we can learn theirs. NOVA Wonders travels around the globe, where researchers are deciphering an amazing array of clues that reveal how animals share information critical to their survival.

From what makes us fat, to what makes us fart, to what makes us freak out, there is a whole new paradigm for understanding how the human body works. Human cells are outnumbered by non-human bacteria, viruses and fungi, making our bodies a host and resource for multitudes of other organisms. Scientists are discovering this biological frontier and opening up a new world of microbial forensics.

Know what this is about?
Be the first one to add a plot.

Know what this is about?
Be the first one to add a plot.

Scientits and and even doctors have the technology to alter the DNA of organisms including humans. A few dramatic successes have cured people with fatal genetic diseases. but there remains the risk of unintended consequences. When it comes to making DNA for new organisms from scratch, that's a story for the distant future. Written by David Foss