Park rangers know everything. At least, that’s how it seems to hikers and picnickers and park visitors desperate to shanghai a ranger and pepper her or him with questions. City park rangers have decided to make it easier to get all those questions answered by inviting Austinites to join them for a civilized cup of coffee or tea and a chat on a regular basis. Coffee and tea are provided, as are cups, but participants are encouraged to bring their own reusable mugs along with their questions and topics of conversation. Meet at the Ranger Station in Zilker Park (the stone cottage near the playground) every Saturday from 10 a.m.-noon.