41.   The researchers concluded that programs like Head Start, if properly structured, can pay dividends long after children have learned to read.

42.   The researchers concluded that traffic lights ought to be adjusted.

43.   The researchers concluded that under stress, immune cells do not disappear.

44.   The researchers did conclude that people with diagnosed high blood pressure can benefit slightly from eating less salt.

45.   The researchers concluded that birth order is a factor that contributes significantly to the variance of adult height among siblings.

46.   The researchers concluded that marijuana-based medications were no better than codeine in managing acute pain, and had more harmful side effects.

47.   The researchers concluded that only these human activities can account for the kinds of changes in climate that are being seen.

48.   The researchers concluded that roaches navigate by using the tips of their antennae, giving them the ability to twist and turn their bodies with incredible agility and speed.

49.   The researchers concluded that the illness was directly linked to the oxygen atmosphere at high altitude, and not to leaking.

50.   The researchers concluded that universal ultrasound would add millions of dollars to the cost of prenatal care with no payback in better babies.