In Reykjavik, Iceland, a volcano under a glacier erupted for the second time in less than a month on April 14. The volcano, about 75 miles east of Reykjavik, erupted after almost 200 years of silence and inactivity, the last eruption near the Eyjafjallajokull glacier in 1821. There are no signs that the large clouds of volcanic ash should disrupt air travel between Europe and North America, so we are safe in San Diego. Iceland’s international airport also remains open.