①The weather's getting cooler; the trees are turning brown—it's autumn!
②Is it autumn or fall? The third season of the year has two names, autumn and fall. Both of them were born in Britain. What exactly you should call that season depends on where in the world you are and whom you ask. In Great Britain, it usually has only one name: autumn. But if you come to the US, you'll find that American people use both fall and autumn when referring to this time of year.
③Why do leaves turn yellow? In autumn, leaves go from green to orange, red, yellow and brown. A chemical called chlorophyll (叶绿素) plays a role. Chlorophyll helps trees make sugar from sunlight. This feeds the tree and keeps the leaves green. But as autumn comes, the chlorophyll becomes less. The green color goes away, and now we can see the other colors in the leaves.
④What are the special foods in autumn? In autumn, apples are good for you and there are lots of other anti-inflammatory (抗炎的) foods to try as well, such as cabbage, cauliflower (花椰菜), garlic(蒜), peas, and all kinds of lettuce (生菜).
⑤Do some outdoor activities! Autumn is a perfect season, with a comfortable temperature for people to do some outdoor events. Go hiking up the mountain or biking down the road in the countryside. Just give yourself a break to enjoy nature.