As winter gives way to spring, students feel a quickening *pulse for outdoor activities.However, beware of tragic accidents, such as the Taihu Lake incident several weeks ago. Four students from Shanghai were killed and several injured when their *yacht hit a tow cable between two cargo vessels. There were several reasons for the accidents. But if the students had worn life jackets, it would have made a big difference. Take precautions before embarking on trips whether on land or water. 21st Century interviewed experienced backpackers and tour guides for advice.