Geology

By Sarah “Steve” Mosko for Boogie Green - By mid-twentieth century, humans had altered the Earth to such an extent as to mark the start of a new geologic epoch named the Anthropocene, concluded an international consortium of researchers in a January issue of the preeminent journal Science. Scientists divide Earth’s 4.5 billion year history into so-called epochs or time units based on major shifts in the composition and state of the planet as recorded in distinct stratifications in rocks, sediments and glacier ice. Previous transitions from one geologic epoch to the next were triggered by either cyclical drivers of climate change...