Excerpts from this story referencing "California":
"… he is using a device called a gas gun at NASA’s Ames Research Center in California to study the impactor, while separately producing computer simulations of …"
"… and nuclear weapons designer at Lawrence Livermore National Laboratory in California, presently engaged in refurbishment of the U.S. W-87 warhead — a weapon …"
"… decades to budge a big rock. A team of scientists including University of California physicist Philip Lubin has also proposed building a six-mile-wide arr …"