What is the ETA? European travellers need €12 entry permit to visit the UK starting today
Read our full guide to the UK's new Electronic Travel Authorisation (ETA): who needs it, how long it's valid and how to apply ...
SLAC Just Fired the Most Intense Submicron Electron Beam in History – Here’s What It Can Do
Scientists carefully positioned lasers to compress billions of electrons together, creating a beam five times more powerful ...