Killer sudoku is similar to the other levels in that each of the numbers 1-9 must fit into each 9-by-9 square. No number can ...

Getting there: Hawaiian Airlines, Jetstar and Qantas fly from Australia to Oahu, the main gateway to all the Hawaiian islands ...

With the electrification of society and the green transition, the need for efficient high-power electronic converters to support the electricity demand is at an all-time high. A key enabler is the ...

Get all three sports-related questions of varying difficulty (easy, medium and hard) and you claim the Herald hat-trick. Quiz ...