Mysterious signals to bees. Some flowers attract bees with invisible to us colors and special signs. Wild flower begonia looks white to us, and for the bee â blue-green. Bees distinguish ultra-violet rays, which our eyes do not perceive. They see the pattern on the flower evening primrose, which we are not able to distinguish.
Osteoarthritis. A progressive, degenerative joint disease, the most common form of arthritis, especially in older persons. The disease is thought to result not from the aging process but from biochemical changes and biomechanical stresses affecting articular cartilage.
Osteoarthritis is a progressive form of arthritis characterized by breakdown of the cartilage in joints. Osteoarthritis (OA), also known as degenerative joint disease and wear and tear arthritis, causes pain in the joints with activity. The knees and the hips are common locations for osteoarthritis. Osteoarthritis is common in people over 60 years of age, but it can affect younger people, particularly where they have had joint injury or joint surgery.