On Earth, water naturally flows downward, aiding plant roots in absorbing nutrients ... The data from the lettuce experiment supports the development of closed-loop systems that recycle water, air, ...

Allow the seed heads to dry for a few days in a paper bag with open air flow ... Because lettuce has a rather compact root system, it makes an ideal crop to plant in pots. Plus, it’s a great ...

NASA astronaut Sunita Williams, on an eight-month mission aboard the ISS, is growing 'Outredgeous' romaine lettuce to understand ... nutrient absorption, and root orientation.