Trying to understand how a map relates to what’s on the ground can be tricky. It requires the brain to do a lot of stuff that it doesn’t customarily do on a day-to-day basis. (This is one of the ...

I've been finding my way around the night sky with a star map for more than six decades and have always found it quite easy. And then in 1994, I visited the Southern Hemisphere for the first time. For ...