A poignant story on Memorial Day

This Memorial Day, join me in paying tribute to those who gave their lives for our country and for causes greater than themselves. I will remember one such person, who has brought considerable meaning to my own life: Pvt. Frank E. Mackey.

From Here to Mars: My Testimony before the U.S. Senate Subcommittee on Science and Space

Ten years ago I came out with a book, “Partners in Space: US-Russian Cooperation after the Cold War.”

Swords into Ploughshares

Yesterday, American officials and their Russian counterparts marked the end of the Megatons to Megawatts program with the last shipment of Low Enriched Uranium (LEU) from Russia to the United States.