Mark D. Kaufman
More from Mark D. Kaufman
Climate Change
Take it from a former park ranger: No one is going rogue Take it from a former park ranger: No one is going rogue
Updated on Jun 9, 2021
Environment
Every sunset ends with a green flash. Why is it so hard to see? Every sunset ends with a green flash. Why is it so hard to see?
Posted on Aug 2, 2017
Animals
Desert critters avoid noisy wind farm turbines Desert critters avoid noisy wind farm turbines
Posted on May 11, 2017
Archaeology
From the archives: 100 years of mastodon fossil fascination From the archives: 100 years of mastodon fossil fascination
Posted on May 1, 2017
Science
Life in Los Angeles was brutal for saber-toothed cats Life in Los Angeles was brutal for saber-toothed cats
Posted on Apr 24, 2017
International Space Station
NASA’s new ozone layer watchdog takes orbit NASA’s new ozone layer watchdog takes orbit
Posted on Mar 11, 2017
Animals
Wild elephants will sleep when they’re dead Wild elephants will sleep when they’re dead
Posted on Mar 4, 2017
Archaeology
This ancient society passed power down from woman to woman This ancient society passed power down from woman to woman
Posted on Feb 22, 2017
Environment
Scientists may have actually found a lost continent Scientists may have actually found a lost continent
Posted on Feb 4, 2017
Biology
Life on Earth exploded, but meteorites didn’t start the party Life on Earth exploded, but meteorites didn’t start the party
Posted on Jan 31, 2017