VADLO is a web search engine for biologists. Particularly useful is the PowerPoint search, which can help you find presentations on the area of research you are interested in. It also has a daily cartoon called "Life in Research". This one, for example, reveals the truth about life on Earth.
NextBio is also a bioscience search engine that aggregates information from a number of different databases, including clinical trials.
Both VADLO and NextBio are designed for scientists who want highly technical information. The search results are likely more detailed than the information a semicasual seeker is looking for.
If what you want is a general overview, Seed Magazines Cribsheets might just be what you are looking for. Here are the bioscience ones currently available:
- Cribsheet #16: Synthetic Biology
- Cribsheet #14: Exoplanets ("...discusses "habitable zones," regions of space around a star where life as we know it can exist, and tracks our progress in the search for other Earth-like planets.")
- Cribsheet #12: Genetics
- Cribsheet #10: Photosynthesis
- Cribsheet #7: Extinction
- Cribsheet #1: Stem Cells