Could future astronauts use oysters as water filters? Here's why one company thinks so

Engineers looking for safe water and recycled air for astronauts should look no further than nature, according to one team of researchers.Oysters and other forms of "biogenerative" life support systems, which use living beings for food, water recycling and air regeneration, are under study at Pennsylvania's Harrisburg University with Monolith Space, a small company featured on the This Week in Space weekly podcast with Space.com's Tariq Malik and author Rod Pyle in March. The shelled creatures a