The question of life on Venus, of all places, is intriguing enough that a team of U.S. and Russian scientists working on a proposal for a new mission to the second planet — named Venera-D — are considering including the search for life in its mission goals. If all goes as planned, an unmanned aerial vehicle (UAV) could one day be cruising the thick, sulfuric-acid clouds of Venus to help determine whether dark streaks that appear to absorb ultraviolet radiation could be evidence of microbial life.
A particularly important facet of the unified physics model is the understanding that complexity and synergistic organization emerge naturally in self-organizing systems. This is a result of relatively simple information feedback processes that inform the system and thus narrow the staggering amount of potential random processes and drives the formation of meaningful arrangements and adaptations. From this understanding, it would be expected that living systems should arise with great frequency across stellar systems wherever the conditions are amicable. A process that can be termed: universal biogenesis.
In light of this, an important test will be to investigate and identify whether or not any other bodies in the solar system contain life. Mars has always been a good potential candidate, as well as some of the satellites of Jupiter and Saturn, such as Europa and Enceladus, which may contain vast subterranean liquid oceans. Another candidate, which may be surprising to some, is the planet Venus. Although the surface of Venus is an extremely inhospitable place, the upper atmosphere of Venus is actually one of the most similar environments of another body to those found on Earth.
Article: http://www.space.com/35294-alien-life-venus-mission-concept.html