December 18, 2016  Our current dilemmas require overcoming existential risk through new forms of cooperation and innovation as Earth potentially enters a new eon, the "Sapiezoic," says guest blogger David Grinspoon.
October 1, 2016  Looking at the Anthropocene through the lens of astrobiology could help us move on with the planet — so it doesn't move on without us, says physicist Adam Frank.
Peter Ward: Are We Headed Into Another Mass Extinction?
September 30, 2016  At various times, life on earth has come close to being erased. Paleontologist Peter Ward explains what we can learn from previous mass extinctions.
Are We Headed Into Another Mass Extinction?
Cary Fowler: Can We Preserve Seed Diversity For The Future?
September 30, 2016  Biodiversity archivist Cary Fowler explains how the Svalbard Global Seed Vault will prepare humans for the climate change and its effect on our environment and our food supply.
Can We Preserve Seed Diversity For The Future?
Kenneth Lacovara: What's The Anthropocene?
September 30, 2016  Have we entered a new age defined by humans? Paleontologist Kenneth Lacovara says there's "no doubt" that humans' impact on Earth will show up in the geological record.
Emma Marris: How Do We Embrace All Kinds Of Nature?
September 30, 2016  Environmental writer Emma Marris wants us to broaden our definition of nature to one that embraces urban and wild spaces in order learn to protect and care for it.
How Do We Embrace All Kinds Of Nature?
April 6, 2015  Some scientists suggest calling the era we live in the Anthropocene, to denote the time when humans came to dominate Earth's fate. But did it start with farming, the atom bomb or another event?
September 28, 2014  We must have the courage to accept our responsibility as our planet's — and our descendants' — caretakers without cowering before the magnitude of our challenge, says anthropologist Vincent Ialenti.
September 26, 2014  Commentator Adam Frank says if we're building cities that affect the entire planet, maybe it's time to start thinking about how nature and cities can evolve together.
September 21, 2014  Comparing and contrasting different times and places as analogues for one another could help us re-adjust our orientations toward time and our environment, suggests anthropologist Vincent F. Ialenti.
A Human-Driven Mass Extinction: Good Or Bad?
January 28, 2014  The real dilemma we face from climate change is keeping this machine we call civilization working in a rapidly changing natural world. Nature, life, will survive and thrive, regardless of what happens to humanity, says commentator Adam Frank.
March 26, 2013  The wilderness is not just a thing, it's a need. It's an idea that has grown up with humans and it will follow us from this planet to the next, and beyond. Commentator Adam Frank plots our future course.
October 9, 2012  The vast web of geometries traced out in light shows you cities as a kind of infestation. They're like living networks spreading across the planet.