It's one of those lessons you internalize from a young age without really questioning: "no two snowflakes are alike." Amazingly, according to National Geographic, it's likely true. Russian photographer Alexey Kljatov captures the extraordinary diversity of snowflake crystals using an ingenious DIY rig made from an ordinary point-and-shoot camera, an old Russian macro lens, a little tape and a wooden board (see this blog post for the details). To make sure his images are crystal clear, Kljatov takes several identical photos of each crystal and averages them together (he details that process here). After a little post-processing and colouring, he ends up with the amazing results you see above — each one a reminder that winter isn't all bad.