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Skip to content About 800,000 years ago, a miraculous change took place on Earth. The ice age cycle transitioned from happening every 41,000 years...
Skip to content In my recent reflections on the 50th anniversary of C. S. Lewis’ death, I focused on the influence Lewis has had through works lik...
Skip to content The ultimate Hollywood disaster movie would portray the catastrophic consequences of a nearby supernova eruption. If one were to o...
Skip to content In mountain climbing, the death zone refers to altitudes above 26,000 feet (7,900 meters). At that height, the atmospheric pressur...
Skip to content I wouldn’t classify it as a bucket-list experience, but it was off-the-charts cool to see a duck-billed platypus up close a few ye...
Skip to content In part 1 of this series on the solar system’s youth I described the solar system’s exquisitely fine-tuned birthing experience. He...
He came from splendor to be born in poverty. He left the presence of angels, for the company of me. He laid down a scepter in heaven to be laid in...
Skip to content First articulated in the early 1970s , the faint Sun paradox (also known as the faint young Sun paradox) reveals that the Sun toda...
Skip to content For the last 35 years of my life I have made it my goal to try to read at least three hours a day. It’s an ambitious objective, an...
Skip to content Imagine an Earth without plate tectonics. We might envision fewer natural disasters—no tsunamis in India, no earthquakes in Japan,...
