What early scientist established the system of latitude and longitude for the Earth we know today?
Send your answers to george@bwsailing.com. A winner will be selected randomly from the correct answers.
Many thanks to everyone who sent in answers to last week’s question. The winner this week is regular Mindbender contributor Bob Pickett who emailed: “The northern lights (Aurora Borealis) are caused by collisions between fast moving particles from the sun and gases in the earth’s atmosphere, primarily oxygen and nitrogen. These charged particles are released during solar storms and travel through space, eventually interacting with the Earth’s magnetic field.”










