Say what you will about the Mall of America, but the architects and teams running it have designed and deployed some great sustainability measures throughout, including balancing the plant ecosystem with ladybugs to combat the aphids during hatching season. (Via @rationaldoge@hachyderm.io)

Screen shot of text from article: “Apart from the honeydew, aphids can often carry various viruses. These can stunt the growth of the plant, cause leaves to yellow or have spots.&10;A member of the mall's landscaping team came up with a solution that didn't include harmful pesticides.&10;Ladybugs are a natural predator of aphids, and help the mall's plants to regulate in their environment.&10;The ladybugs are released once a year in the spring, aligning with the aphids hatching season. Once the ladybugs take care of the hatchlings, aphids aren't even a thought for a whole year.&10;This activity wasn't released to the public for the first few years, but it is now quite a popular event.”