This is the extended version of my chat with Canadian astronaut David Saint-Jacques, featured on the Aaron Rand Show on CJAD. For more info: www.asc-csa.gc.ca/eng/astronauts/c…aint-jacques.asp...
RT @Ri_Science: The difference between FM and AM radio? 📻 Basically, FM radio is tuned to changes in the frequency of radio waves, whilst A…17hours ago
