Lisa Tauxe (Paleomagnetist, Scripps Institution of Oceanography, USA) explains to elementary school students at Cotteridge Primary School (Birmingham, UK) how the direction of the Earth’s magnetic field is recorded in sediments and how that can help us determine their age. Helping her is the school’s mascot, Cotty, who is about the see what the inside of the cryogenic magnetometer looks like! (Credit: Elizabeth Griffith & IODP) [Photo ID: exp355_142]