41.   Some studies have linked a rare disease called baby botulism with honey.

42.   Some studies have linked chronic exposure to high levels of nitrogen dioxide to increased risk of respiratory illness.

43.   Still, a few studies have linked cell phone use to the risk of brain cancer in laboratory animals.

44.   Some studies link the disease to exposure to pesticides and other toxins, but they are inconclusive, Weiner said.

45.   Studies have linked the cattle disease to Creutzfeldt-Jakob disease, which attacks the human brain and is fatal.

46.   Studies link alcohol consumption to violent crime, which hits many minority neighborhoods.

47.   Studies have linked caffeine to increased risk of heart disease and heart attack, and as a possible contributor to bladder cancer and birth defects.

48.   Studies have linked oxytocin, which is also produced during childbirth and nursing, both with maternal behavior and with social affiliation.

49.   Studies link the drought to a sunspot cycle not due to end until the millennium.

50.   Studies have linked its use to cancer in laboratory animals, though no such link has been found in humans to date.