Chances are, that pile of snow in your yard contains bacteria -- but not because it's dirty. New work in the journal Science suggests that bacteria may have played an important role in forming those snow crystals. Researchers explain the connection between microbiology and meteorology.
One of the most contentious topics in medical research is the issue of experimentation on animals. How well do animal models predict what might happen in humans? What alternatives to animal testing exist, and how well do they work?
Often as you get older or due to medical conditions, it can become harder to navigate staircases. This can greatly hinder your ability to fully enjoy and utilize your home. When it has become impossible or just unsafe to travel up and down the stairs it is no longer necessary to think about buying a new home or just not using part of your home. Stair lifts can help you to regain your freedom and independence.
There are many different types of stairlifts. For most people the seated stair lift offers the best way to regain their freedom. A seated stair lift offers a 180 degree swivel seat with liftable armrests that allow the user to easily enter and exit the stair lift. A quality stair lift will also have a seat belt for added safety.
The installation of these products is generally simple and can be done in a few hours with common household tools. However, in instances where your staircase is unusually narrow or if you have a spiral staircase you should consider having the stair lift professionally installed. For heavy duty stairlifts intended for commercial use some states, like WA and CT, now have local code requirements when installing these devices.
The actual time between two yearly solar events works out to be 365.2422 days -- resulting in almost one full extra day every four years. The federal government's chief of time and frequency explains the finer points of telling time.
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Scientists are getting closer to creating artificial life in the lab. But is society ready for custom-made organisms? Synthetic biology has the potential to dramatically change fields from agriculture to medicine to zoology. But what protections need to be in place as research proceeds?