PDF version "Yesterday's sensation is today's calibration." - R. P. Feynman "...and tomorrow's background." - V. L. Telegdi

Guest post by Teodora Nikolova, communications-in-charge for the Bulgarian CMS Virtual Visit

Guest post by Abhishek Anand, from Delhi Public School, New Delhi, India

Guest post by Sudhir Malik, University of Puerto Rico at Mayagüez