Whether you have a piece of land or a few pots on a balcony, plant a family garden: You'll all live healthier! Gardening is an easy activity to share and you'll harvest benefits along with your fresh vegetables, colorful flowers, and aromatic herbs. Even better, you don't have to wait for your plants to bloom to see those benefits.

    When parents and kids work together to plant and care for a garden, they can all enjoy these benefits:

    Physical activity: Gardening and yard work are mild exercise, which we all need every day (for at least 30 minutes). While tending your family garden doesn't require the intense activity of running or playing singles tennis, it's still beneficial to your health. For one thing, research shows that once you start gardening, you usually continue for more than 30 minutes. And gardening combines delicate skill strengthening and stretching.

    Lower stress, better mood: Gardening is excellent stress relief for good reasons: enjoying fresh air and sunlight, performance of relaxing tasks, and even contact with harmless bacteria in the soil that helps release serotonin (血清素) in the brain.

    Outdoor time: Children prefer spending a lot of time indoors, which can negatively affect their behavior and health. A family garden gets them outside enjoying and experiencing the natural world.

比尔·布莱森在他的《万物简史》里介绍了超级火山的巨大破坏性。以美国为例，__①__境内有一座超级火山喷发，__②__其产生的巨大能量将摧毁数千公里范围内的所有东西，无数人会因此丧命，__③__会导致整个国家被深达6～20米的火山灰覆盖，随后__④__会出现其他许多可怕后果。  __⑤__目前人类还无法预测美国超级火山会在何时喷发，__⑥__了解了它的杀伤力有利于我们制订各种减损预案。