Pure sulphur causes Indonesia's Kawah Ijen volcano to burn blue lava at night. See spectacular photos -- and a video -- here.
36-Hour Precipitation Outlook
The Franklin Expedition: What we didn't know
What you need to know about the incredible journey of Franklin and his crew.
Brain-eating amoeba sparks emergency
Schools taking no chances after deadly organism found in water supply.
Introducing the 'smart' wheelchair
Intel's newest Internet of Things project will open the world to wheelchairs.