Very rarely, depending on where you are in the world, your compass can actually point to true north.
Recently, magnetic compasses at Greenwich pointed directly at true north for the first time in 360 years. This is currently happening in Western Australia too. But what does it mean?
The orientations of the stone walls that crisscross the Northeastern U.S. can tell a geomagnetic tale as well as a historical one.
Scientific inspiration struck a geologist after many walks through the woods in New York and New England. These ruins hold the secret of where the compass pointed north when they were built centuries ago.
Historical records can help us understand what will happen to the northern lights.
An Arctic iceberg, pictured in 2015. This year, ice coverage has reached record lows for the early northern winter.
The end of 2016 has brought balmy Arctic temperatures and record low ice extent for the time of year. It's a freak event even by modern standards, and climate models point the finger firmly at humans.
The earth’s missing ‘fingerprint’ sits somewhere in the upper atmosphere, but for some reason eludes climatologists.
Without understanding why the 'fingerprint' has failed to appear our predictions about global warming - as carbon dioxide concentrations increase - are uncertain.
Australia (whose flag is pictured on the right) is one of several countries with a big stake in the South Pole.
Josh Landis/US NSF/Wikimedia
It's one of the remotest places on Earth and yet is still claimed by six nations – including Australia.