It’s National Polar Bear Day! February 27 is the official day when Polar Bear International focuses the attention on the world of these bears and how we can help them beat the challenges of global warming. For the second year in a row, PBI is focusing the celebration around a worldwide Thermostat Challenge as part of its Save Our Sea Ice Campaign. And you can get involved! Join people around the world in raising or lowering your thermostat—according to where you live—by two degrees. But that doesn’t have to stop after today! PBI would like this practice to become a habit for everyone. They’re also encouraging people to speak up to elected officials in support of energy-saving measures. If we don’t take action, research shows that two-thirds of the world’s polar bears will be gone by the middle of the century.