Lynette Abbott examines how the rhizosphere, a narrow collar of soil clinging to plant roots, is emerging as a key player in soil and plant health ...

You might assume root canals are painful, but many people report they're no more painful than getting a filling. The discomfort you may have leading up to this kind of dental care can be very painful ...

What Is a Root Canal? A root canal is a treatment used to repair and save a tooth that is badly decayed or infected. A tooth's nerve and pulp can become irritated, inflamed, and infected due to deep ...