Back from Iceland
I’m back from an intense and rewarding research trip to Iceland. I’ve just added some of my favourite clues, signs and other observations to The…
Tag: nature’s clocks
How Do Trees Know When It’s Spring
How Do Trees Know When It’s Spring? Broadleaf trees have to work out the best time to come into leaf each year, they need to…
How to Use the UK Military’s Survival Compass to Tell the Time
A guest blog by John Hudson FRGS, the UK military’s Chief Survival Instructor. Direction finding in the military these days uses lots of technology, but…
Analemmas and the Equation of Time
If you stood on the same spot and took a photo of the sun every day during a year’s worth of good weather, at exactly…