The constant movement on Earth’s surface — ocean currents, weather erosion, plate tectonics, and life — has destroyed 60 to 80 percent of the evidence of Earth’s early life, according to the researcher. But Mars, which formed 4.5 billion years ago, along with Earth, is frozen in time and could reveal the mysteries of our planet’s beginnings. PROVIDENCE — James Head wanted to study earth science before he realized the answer to what’s happening on Earth is somewhere out in space. Head and colleague Jay Dickson recently partnered with four other scientists, and NASA, in a study that found Mars...