David Morrison is a long-time NASA senior scientist and Committee for Skeptical Inquiry fellow. He now divides his time between the SETI Institute and the NASA Lunar Science Institute. He hosts the "Ask an Astrobiologist" column at NASA's website.
On February 15, 2013, the million inhabitants of the central Russian city of Chelyabinsk experienced a half-megaton explosion from a disintegrating space rock. What happened, and how did the people of Chelyabinsk react?
Skeptics often say they are trying to expose pseudoscience, but in reality we tend to use this term loosely. Creationism, homeopathy, alternative medicine, and cold fusion are clearly pseudoscientific, but what about ancient aliens, UFOs, alien abductions, Bigfoot, crystals, the Moon hoax, and many other claims investigated in the pages of the Skeptical Inquirer?
Ask an Astrobiologist
What is the history behind Astrobiology? How could we find life on other planets? Why is the U.S. government building bunkers to house the elite in case of a global disaster? Are we headed for another ice age?
No End in Sight for Civilization
Jesse Ventura’s New World Order, Camera Artifacts, and Life As We Know It
Solar Warming Is Myth, Global Warming Is Real
The Supermoon and Comet Elenin
Concerns about the Solar Maximum and Threats to Our Planet
The 2012 Doomsday Hoax: Update II
April 21, 2011
On Internet conspiracy sites, this comet is being blamed for the March 10 Japan earthquake and tsunami, and it is supposed to either hit the Earth or...
April 15, 2011
NASA astrobiologist David Morrison answers more questions
The three books I review here offer complementary frontline accounts of the Climate Wars.
December 6, 2010
NASA astrobiologist David Morrison answers more common questions
November 24, 2010
Questions from the public regarding the next solar maximum and the hypothesized "Planet X"
The rise and fall of the theory that cosmic catastrophes altered human prehistory in North America.
June 18, 2010
David Morrison answers more common questions
June 1, 2010
Questions from the public regarding extraterrestrial life.
May 19, 2010
Questions from the public regarding earthquakes and volcanic eruptions, answered by Dr. David Morrison
Most arguments from global warming disputers don’t make scientific sense or are based on distorted or obsolete information. Here are short answers to ten of...
Moon Hoax Resolved: New Lunar Orbiter Images Show Moon Landers, Astronauts’ Tracks
Did NASA fake the landings on the Moon? This has been one of the most consistent (and outrageous) conspiracy myths of our day.
Sidebar to Morrison's update on the Niburu 2012 doomsday
Special preview from the November / December 2009 Skeptical Inquirer
It is widely (but falsely) reported that Buzz Aldrin saw a UFO on the Apollo 11 flight.
An astronomer tries to counter misinformation on the Internet about a supposed rogue planet and an impending catastrophe.
David Morrison remembers Arthur C. Clarke
In remembrance of Carl Sagan, a noted planetary scientist and colleague recalls Sagan's contributions to planetary research.
SETI is a scientific effort that has attracted wide popular interest over the past half century.
Evolution opponents are framing the issues to our disadvantage.
Media reporting on asteroid impact-related science frequently exaggerate the uniqueness and significance of new research.