Popeye would surely tell you that every day is National Spinach Day, but it actually falls on March 26. Take a note from the Sailor Man and honor this most sacred spinach day (and get some added iron, potassium, and other minerals) any time you want with one of these 20 recipes.
Hard corals grow by producing calcium carbonate (CaCO3) from seawater and later add it to their skeletons, where it crystallizes. This process and coral survival are endangered by ocean acidification.