Astronauts Sunita Williams and Butch Wilmore, whose eight-day mission turned into nine months on the International Space ...

Here's which types of lettuce are most popular, why these greens are good for you and what you need to be mindful of as you include more in your diet.

Keep in mind that darker red leaf varieties won’t maintain ... lettuce include the commonly grown butterhead lettuce, robust ...

Romaine lettuce comes in second at 35% ... more than one of these varieties along with mustard greens, endives, red and green oak leaf and little gem lettuce. While many of these nutrients ...