Alligator fat can be made into biodiesel (and, yes, they have a lot of fat). Extreme cavers descend into the dark and dangerous depths of Earth's deepest cave. And we tour the original, long-lost SeaWorld that never was. It's time for the week's Landscape Reads! » 4/23/14 10:40pm 4/23/14 10:40pm

Inside the DIY World of Mapping Caves With Radio

Underground, where this is no GPS and certainly no Wi-Fi, mapping caves requires a different kind of technical ingenuity. Thus, there is cave radio. To learn about the DIY world of cave radio and underground exploration, Gizmodo picked the brain of Stanley Sides, tinkerer and former president of the Cave Research… » 4/03/14 12:20pm 4/03/14 12:20pm