The astronauts on board the International Space Station have the best view on Earth, and recently they spotted an elusive phenomenon shining high above the ground.
Signs of a changing season
As summer draws to a close, we are reflecting on the season that was.
The Franklin Expedition: What we didn't know
What you need to know about the incredible journey of Franklin and his crew.
'Where the powerful storms now live'
If the pattern continues, it could spell a record-breaking hurricane season for ...