Tom Davis is a 1972 West Point graduate with a Master’s degree from Harvard University. He is author of the Cold War novels “Conclave” and “Empty Quiver”.

The Universe is: Expanding, cooling, and dark. It starts with a bang! #Cosmology Science writer, astrophysicist, science communicator & NASA columnist.

The Official Medium Account of the U.S. Department of Transportation

Official Medium account for the Fast Company business media brand; inspiring readers to think beyond traditional boundaries & create the future of business.

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Transportation Alternatives is your advocate for walking, bicycling, and public transit in New York City. We stand up for #VisionZero & #BikeNYC.

Co-Founder: ChangeOS | Bestselling Author, Keynote Speaker, Wharton Lecturer, HBR Contributor, - Learn more at www.GregSatell.com