What are your plans for August 21, 2017? If you haven't heard, there's going to be a total solar eclipse over the US and EclipseMob is hosting a citizen science experiment they can participate in. In a "Speaking of Geoscience" blog post at the Geological Society of America, you can learn how to participate in a free webinar to learn about the upcoming eclipse, and how to build your own receiver to participate in what could be the largest low-frequency radio wave propagation experiment. Help EclipseMob collect radio signals before, during and after the solar eclipse that will occur over North America on August 21, 2017 to study the effect of sunlight on the ionosphere.