One of the most common questions faced by those of us who study other worlds is this, “What good is studying planets when we have issues here on Earth?” Well, it turns out Earth happens to be a planet and sometimes geology can tell us really cool things about humanity.  A new study in Nature Communications, led by Tristan Salles, looks at the historic geology of Australia and the once connected landmass that is now Papua and Papua New Guinea. This former continent is called Sahul, and this research shows how people could have entered through the North and migrated across Sahul over...

Credit: Berserkur via Wikimedia Commons One of the daily activities that is helping me stay sane is volcano watching. I love volcanoes. I especially enjoy when they erupt in places that have webcams but don’t affect the lives of people. Unfortunately, those are both...