註釋
There is a very old volcano in Ethiopia. Volcanoes can be dangerous, but they also offer important information. Two scientists are traveling to study it. What will they learn? Snow is very important for running a ski are. But this year, it’s too warm for natural snow. An owner of a ski area in United States has a little “snow magic” to get the snow he needs! According to a local story, the Giant’s Causeway in Northern Ireland was made by a big man. But scientists have a different story. How was this unusual place created? *1 accompanying CD
