Dr. McAfee is a principal research scientist at the MIT Center for Digital Business.

WSJ: What Makes a Company Good at IT?

Andrew McAfee is a principal research scientist at the MIT Center for Digital Business.

FORBES: Are CIOs Finally Embracing Social Media?

Roy Spencer, a principal research scientist at the University of Alabama in Huntsville, is one of the most knowledgeable climate scientists in the world.

FORBES: The Meltdown Of Global Warmists Reveals Their True Priorities

Today, Katz works at the renowned Massachusetts Institute of Technology, where he is the principal research scientist at the Computer Science and Artificial Intelligence Laboratory.

CNN: 'Littlest refusenik' on Kennedy: 'He saved my life'

"Imagine a scenario where you go to Ikea and buy a chair, put it in your room and it self-assembles, " said Carlo Olguin, principal research scientist at the software firm.

BBC: TED 2013: 4D printed objects 'make themselves'

In October, 2006, I was asked to join a workshop on modern malware hosted by the Santa Fe Institute and co-chaired by Matt Williamson, principal research scientist from Sana Security, and Esther Dyson.

FORBES: New Cybersecurity Focus For Federal R&D Group

Spencer, a principal research scientist at the University of Alabama-Huntsville and former senior scientist for climate studies at NASA, has also observed that results of the one or two dozen climate modeling groups around the world often reflect a common bias.

FORBES: Climate Forecasting Models Aren't Pretty, And They Aren't Smart

Joel Levine is senior research scientist at NASA's Langley Research Center and principal investigator on the Mars ARES mission proposed some time in the future.

NPR: Revisiting the Viking Missions to Mars

He is senior research scientist at NASA's Langley Research Center and principal investigator on the Mars ARES mission.

NPR: Revisiting the Viking Missions to Mars