2 . Change can be unsettling. Good or bad, exciting or unexpected, there’s an undeniable anxiety that accompanies seeing our lives shift. Thankfully, nature reminds us that entering a new season in our lives is nothing to fear but something to enjoy.

What’s now known as “leaf-peeping” has become a highly profitable form of tourism in the United States. A research shows that across states in the eastern half of the country, fall foliage (叶子) tourism contributes more than $30 billion to local economies. And even though climate change has made int more difficult to predict when exactly foliage will peak, it hasn’t stopped people from trying to figure it out. Tourism leaders from the Smoky Mountains recently released their annual fall foliage prediction map which helps travelers plan out when they have the best chance to catch those beautiful autumn views.

Perhaps part of what makes the foliage so special is the belief that it’s temporary. Eventually, branches will become bare, and we’ll stop taking photos for social media. And as the seasons change and we feel that familiar longing for what was, trees will once again embrace (欣然接受) their evolution.

Even when they aren’t decorated with flashy fall colors and their internal systems slow down, trees are still supporting the ecosystem. Their fallen leaves are broken down by bacteria and fungi and provide the soil with nutrients the tree needs to grow. Insects take up shelter in their bark, eventually becoming food for other wildlife seeking a place to nest. Their strong roots stabilize the soil, preventing erosion (侵蚀) from winter snowmelt.

Right now, trees around the country are already beginning to welcome their next chapter. During this time of the year, it feels like forests are just offering endless joy for free. And fall foliage is an everlasting reminder that the growth with changes is beautiful.

Nowadays, with the increasing variety of travel options, conventional group tours,     1     going to scenic spots and taking photos is a big thing, can no longer satisfy a person     2     (look) for a more personalized and differentiated travel experience and eager to find more information about every part of a city in a more immersive (沉浸式的) way.

City-walk, which is all about doing whatever you want in your own     3     (explore) of a city, can meet all these needs, and     4     (consider) the best way to rediscover a city.

Compared with     5     (tight) scheduled travel plans and picture-taking tours, city-walk focuses on the free, casual and spontaneous (心血来潮的) experience. It allows people to see     6     whole different side of a city, permitting them to experience urban life with no transportation other than     7     (one) legs and feet.

    8     a kind of slow-paced and low-carbon lifestyle, city-walk provides people with fresh new insights into the culture and landscape of a city as well as its beautiful natural scenery, and     9     (catch) the public’s eye on various social media platforms during the past months. The search for city-walk is reported     10     (be) on the increase and more people tend to share their city-walking experiences online.

After 53 years as Indiana Dunes National Lakeshore, the southern shores of Lake Michigan     1     (rename) the United States’ 61st national park. Fifteen miles of beaches give way not only to     2     (impress) sand dunes, but also wetlands, maple trees, and fields of wildflowers that come and go with the seasons.

Don’t let its small size and     3     (recent) upgraded designation confuse you: Indiana Dunes National Park’s vivid biosystem ranks seventh out of more than 400 National Parks across America. Here is how you can make     4       most of your trip.

Indiana Dunes National Park is located in the Indiana Dunes State Park,     5     you can find the three tallest dunes: Mount Tom, Mount Holden, and Mount Jackson. However, the most dynamic dune—Mount Baldy, is slowly fading away, or “starving”,     6     (move) roughly four feet a year. The trail to its top is regularly closed; if     7     is open during your visit, go.

Aside from the spectacular sand dunes, the     8     (major) of the park’s annual visitors come for the swimming and surfing. Lake View, Kemil, Dunbar, and Porter beaches are all at your service, with small parking lots that fill up quickly in summer.

The Port of Indiana is a reminder that this area narrowly     9     (escape) industrialization. In fact, the once-largest dune, the Hoosier Slide, was carried off in boxcars as early as 1916. Activists fought to preserve the dunes; their eventual success resulted     10     today’s fascinating landscape.