So much of what we can do on a personal level to fight climate change and protect our environment involves changing our habits. Using a kitchen compost bin to keep your organic waste from decaying a landfill is one such practice—and you don't need a square foot of outdoor space to get started. Before you begin saving all your scraps, check with your city, town, or local environmental group to see when and where you can drop off food waste. That way you don't find yourself with a freezer full of kale stems with nowhere to go. The next step is to simply stop throwing your produce scraps, coffee grounds and filters, used brown paper products in the garbage.