Global warming and rising sea levels will soon threaten parts of Boston.Tomorrow Boston will express their concern for the climate in Christopher Columbus Park. Locals attending the International Day of Climate Action will dress in snorkels and life jackets. Forming a human and sand bag sea wall, hopes are local government officials will catch a glimpse of their anxiety.

International Day of Climate Action, lead by author Bill McKibben, may be the largest political environmental action yet. According to the Boston Globe an expected 4,500 events are to take place in over 175 nations. Participants in these events hope to pressure political leaders to help stabilize carbon dioxide in the atmosphere to 350 parts per million. Current carbon dioxide levels sit around 390 parts per million, without intervention these levels inevitably rise even further.