Over 20% of the world lacks reliable access to electricity. In third world countries, many individuals rely on kerosene to give them sight in the night. There are numerous problems that arise from the use of kersone, including hazardous fume ingestion that causes lung-cancer and infection, fire risk, CO2 emissions, and finally, kerosene is expensive and can devour up to 20% of a households income.

Researchers Jim Reeves and Martin Riddiford believe that their new gadget, the GravityLight, can alleviate all of these problems.