reuters’ hot list

Four of the world’s most influential technology companies are based on the US West Coast. Amazon, Apple, Facebook, and Google have had an enormous impact on our daily lives. But how did Big Tech get so big? Our NodeXL #ddj mapping from April 19 to April 25 found a piece by The Washington Post showing how the success of these behemoths has been fueled by hundreds of acquisitions of smaller companies over the past decade. In this edition, we also feature an investigation into faulty vaccine data publicized by the Indian government, a list of the world’s top 1,000 climate scientists by Reuters, and a look at Europe’s growing rail network.