The nonprofit Chesapeake Bay Foundation would like you to save your shells after you’ve shucked a few oysters. The group recycles the shells and uses them to create oyster reefs as part of its conservation efforts to repopulate the bay. So far, over 2,000 bushels of oyster shells have been collected, which has led to giving homes to millions of oysters. Restaurants in the Maryland area are participating in collections, and you can learn more by visiting cbf.org.

If you buy refrigerated tofu in a plastic container from the store, it’s often packaged in water to help keep it fresh. The directions call for you to drain the water before you slice the tofu to use for cooking. Did you know you can use the leftover tofu water in the container for baking? Much like the water in cans of chickpeas, called “aquafaba,” tofu water can be used as a replacement for eggs in baking. Use 3 to 4 tablespoons of tofu water for every egg in a recipe.

The Center for Energy and Climate Solutions, a nonprofit organization that works toward practical solutions to climate change, studied the eco-impact of e-commerce shopping. It found an extreme difference between shipping overnight air rather than ground shipping methods. The less-expensive (and slightly slower) ground shipping method uses just 1/10th of the energy consumption of planes. The greenest choice of all is walking to your local store and picking it up yourself.