A trillion-ton iceberg broke off the western coast of Antarctica this week. The news raised questions like: Will the chunk disrupt shipping routes? But aside from the physical consequences, there are also digital ones: like the changes mapping services will now have to make. On today's show, we'll chat with Denis Dean — a professor at the University of Texas at Dallas — about what services do in situations like these. Then, we'll cap off the week by playing Silicon Tally with Sara Fischer, a media reporter with Axios.