21.   And though the evidence is still sketchy, some researchers believe that melatonin could help counter the ravages of age.

22.   Arizona State University researchers also believe more snowbirds may be renting condos or apartments or buying homes.

23.   As a woman, these researchers believe, I should look for a man of high status who will invest all his money and goods in our kids.

24.   At present, researchers do not believe that mutations in the human gene are the fundamental cause of most obesity.

25.   Boosting is just beginning to emerge from academia into commercial use, but researchers believe it may have a wide range of potential applications.

26.   A British worm researcher believes he may have hit upon the reason men die earlier than women.

27.   But many researchers believe that even before all these answers are in, many women may turn to raloxifen if it gets FDA approval.

28.   But more cautious researchers believe that uncontrolled use of this poorly understood hormone could backfire in unforeseen ways.

29.   But other researchers believe that talk of global warming is premature at the least, hogwash at worst.

30.   But researchers believe tissue engineering has much broader potential, perhaps one day providing a way to replace entire organs.