阿拉姆-佩德亚自然保护区，塔尔图县，爱沙尼亚 Alam-Pedja Nature Reserve in Tartu County, Estonia (© Sven Zacek/Nature Picture Library)

行动的力量 The power of protest

世界地球日

地球日从不是轻轻敲门，而是一次将大门猛然推开的觉醒。1970年，沾满石油的海滩、燃烧的河流与充满毒素的空气，让数百万人走上街头抗议。当人们再也无法视而不见，环境保护被推上政治议程，催生出一系列里程碑式的环保法案，也让“守护地球”从边缘议题跃升为全球共识。每年4月22日，全球190多个国家都会在这一天停下脚步，反思、审视，并重新思考我们与地球的关系。

2026年的主题“我们的力量，我们的星球”（Our Power, Our Planet）提出了一个雄心勃勃的目标：到2030年，将全球可再生能源产能提升至三倍。但真正的行动，不仅关乎风力涡轮与太阳能板，也在于守护那些早已默默运转的“自然引擎”。例如图中的爱沙尼亚塔尔图县阿拉姆-佩德亚自然保护区。自1994年以来，这里一直守护着欧洲最大的湿地系统之一。而它的方式，其实很简单——让自然顺其本来。河流自由流淌，泥炭沼泽悄然储存碳汇，洪泛平原吸纳多余水量，无需人工筑坝干预。驼鹿、猞猁与黑鹳在这里自在栖息，四季更替不断重绘这片土地的边界。阿拉姆-佩德亚告诉我们：有时候，最有力的行动不是干预，而是克制——退后一步，让自然引领方向。

Earth Day

Earth Day didn't knock gently. It kicked the door wide open. In 1970, oil‑soaked beaches, burning rivers, and toxic air mobilized millions into street protests. When looking away was no longer an option, conservation was forced onto political agendas, sparking landmark environmental laws and flipping planet‑care from fringe concern to global priority. Every April 22, over 190 countries pause, reflect, and reassess.

The 2026 theme, 'Our Power, Our Planet,' sets an ambitious target: triple renewable energy capacity worldwide by 2030. But action isn't only about turbines and solar panels. It's also protecting the natural engines already doing heavy lifting. Take Alam‑Pedja Nature Reserve in Estonia, captured here. Since 1994, it has safeguarded one of Europe's largest wetland systems. How? By letting it be. Rivers run freely, bogs store carbon, and floodplains soak excess water without concrete barriers. Elk, lynx, and black storks thrive as seasons redraw the map. Alam‑Pedja teaches that restraint can be the boldest move—to step back and let nature lead the way.

夕阳下的峡谷地国家公园，莫阿布，犹他州，美国 Sunset in Canyonlands National Park, Moab, Utah, USA (© Jason Hatfield/Tandem Stills + Motion)

日落之后，探索仍在继续 The adventure doesn't end at sundown

峡谷地国家公园

国家公园周，是你暂别日常、走向自然的最佳契机。这一为期九天的庆祝活动将于4月18日至26日举行，聚焦国家公园体系中400多处自然与文化遗产地。在这里，自然风光与人文历史交织，为人们带来难忘的户外体验。从海岸线与森林，到辽阔的沙漠景观，这些受保护的区域邀请人们走进自然，感受宁静，心怀敬畏。

在美国犹他州东南部，靠近莫阿布的峡谷地国家公园，则提醒人们：冒险并不会在日落时结束。当最后一缕阳光隐去，科罗拉多河与格林河在深邃的峡谷间蜿蜒流淌，穿行于高耸的孤峰与嶙峋的岩柱之间。由于地处偏远、光污染极少，这里的夜空清澈通透，繁星如幕，令人叹为观止。

作为“国际暗夜天空公园”，峡谷地国家公园是体验沙漠夜晚的理想之地。在这里观星，无需深入荒野腹地——只需短途步行或在观景点驻足，便能收获难忘的夜间景致。尤其是在无月之夜，银河横贯天际，璀璨壮丽。

National Park Week

National Park Week is your cue to trade routine for trail dust. It's a nine-day celebration running April 18–26, highlighting more than 400 places across the National Park System that preserve natural and cultural heritage while creating unforgettable outdoor experiences. From coastlines and forests to vast desert landscapes, these protected sites invite exploration, reflection, and wonder.

In southeastern Utah, Canyonlands National Park near Moab offers a striking reminder that the adventure doesn't end at sundown. As the last light fades, the Colorado and Green rivers trace their way through carved canyons, towering buttes, and rugged spires. With its remote setting and minimal light pollution, the park's clear skies reveal a brilliant canopy of stars.

Designated an International Dark Sky Park, Canyonlands is one of the best places to experience the desert after dark. Stargazing here doesn't require heading deep into the backcountry—short walks and scenic pullouts provide unforgettable nighttime views, especially on moonless nights when the Milky Way stretches across the sky.

镜面海滩，塞古罗港，巴伊亚州，巴西 Espelho Beach, Trancoso, Bahia, Brazil (© Marcelo Nacinovic/Getty Images)

潮汐留下的印记 The tide's passing signature

巴西巴伊亚州塞古罗港 · 镜面海滩

从空中俯瞰，巴西的镜面海滩宛如一幅可以走入其中的水彩画。浅色的悬崖、点缀在海岸线上的礁石，以及由潮汐形成的片片水潭，在退潮时清晰映出天空与云朵，也正因如此，这片海滩得名“镜面海滩”。它位于巴西东北部大西洋沿岸的巴伊亚州，坐落在塞古罗港的几座小渔村之间。通往这里需要经过土路和短途步道，这种相对不便的交通反而成为一种“天然限流”，让海滩始终保持着宁静而私密的氛围。它位于巴西东北部大西洋沿岸的巴伊亚州，坐落在塞古罗港的几座小渔村之间。通往这里需要经过土路和短途步道，这种相对不便的交通反而成为一种“天然限流”，让海滩始终保持着宁静而私密的氛围。

最迷人的地方在于，这里的景观从不一成不变，而是始终与海洋进行着动态的“对话”。每一次潮汐都会重新勾勒沙洲的轮廓，显露出珊瑚结构，并为水潭补充新的“小居民”——鱼类、海星以及各种微小的海洋生物。最迷人的地方在于，这里的景观从不一成不变，而是始终与海洋进行着动态的“对话”。每一次潮汐都会重新勾勒沙洲的轮廓，显露出珊瑚结构，并为水潭补充新的“小居民”——鱼类、海星以及各种微小的海洋生物。

摩艾石像采石场，拉诺拉拉库，复活节岛，智利 Moai statue quarry, Rano Raraku, Easter Island, Chile (© Gavin Hellier/Alamy)

未完成巨像的静默 The silence of unfinished giants

世界遗产日

在今天的世界遗产日，人们将目光投向那些讲述人类共同历史的地方——这些地点因其卓越的文化或自然价值而受到保护。其中之一，便矗立在智利复活节岛的火山岩之上。在拉诺拉拉库，一座已熄灭火山的山坡曾是岛上绝大多数著名摩艾石像的雕刻工坊。画面展现的正是这一非凡的采石场：半成品的巨像从岩石中显现，仿佛在创作的瞬间被定格。

这些石像由拉帕努伊人在约13世纪至16世纪间雕刻而成，直接取材于压实的火山灰岩。完成后，它们被运往岛上的祭祀平台，用于宗教与仪式活动。拉诺拉拉库位于拉帕努伊国家公园之内，该公园被列入联合国教科文组织世界遗产名录，以其独特的考古景观和延续至今的波利尼西亚文化而闻名。

世界遗产日提醒我们，保护这些地方的重要性。像拉诺拉拉库这样的遗址，不仅仅是地标，更是人类智慧、信仰以及与土地之间联系的见证。这些珍贵的遗产被保存下来，让后代得以继续研究与感受。

World Heritage Day

Today, on World Heritage Day, attention turns to places that tell humanity's shared story—protected for their exceptional cultural or natural value. One of them rises from volcanic stone on Easter Island, Chile. At Rano Raraku, the slopes of an extinct volcano became the workshop where nearly all of the island's famous moai were carved. The image captures this remarkable quarry, where half-finished figures emerge from the rock, frozen mid-creation.

Carved by the Rapa Nui people between about the 13th and 16th centuries, the statues were shaped directly from compressed volcanic ash, then transported across the island to ceremonial platforms. Rano Raraku lies within Rapa Nui National Park, a UNESCO World Heritage Site recognized for its extraordinary archaeological landscape and living Polynesian heritage.

World Heritage Day highlights why protecting such places matters. Sites like Rano Raraku are more than landmarks—they are records of human ingenuity, belief, and connection to the land, preserved for future generations to study and experience.

斯卡吉特谷地郁金香花田, 华盛顿, 美国 Skagit Valley Tulip Fields, Washington, USA (© Alan Majchrowicz/Getty Images)

花瓣巡游 Petal parade

斯卡吉特谷郁金香节

每年春天，华盛顿州的斯卡吉特山谷都会变成一片色彩斑斓的花海，斯卡吉特山谷郁金香节在此欢庆花季的到来。整个四月，游客们可以漫步于郁金香花园和农田，欣赏成排盛开的郁金香，远眺群山美景。

这个节日并非局限于一个地点——它横跨整个山谷，邀请游客探索多个花园，每个花园都各具特色。有些花园注重精心设计的花卉布置，而另一些则展现了仍在运营的农场和广袤的田野。除了鲜花，这个节日还为游客提供艺术展览、适合家庭的活动以及在该地区举办的社区活动。

展览选址于一座废弃的石灰岩采石场，将梵高的画作转化为一个共享的实体空间，投影在高耸的石墙和地板上。参观者不再是退后观赏，而是穿梭于色彩、韵律和尺度之间，体验科技如何重塑我们欣赏艺术的方式。这恰如其分地体现了世界艺术日的宗旨：不仅在于致敬艺术杰作，更在于重新思考艺术如何存在、发展并持续吸引新的观众。

Skagit Valley Tulip Festival

Each spring, Washington's Skagit Valley transforms into a patchwork of color as the Skagit Valley Tulip Festival celebrates the arrival of bloom season. Throughout April, visitors can explore tulip gardens and farmland lined with vibrant rows of flowers, all framed by mountain views.

The festival isn't limited to one location—it stretches across the valley, inviting guests to discover multiple gardens, each offering its own experience. Some focus on carefully designed displays, while others highlight working farms and wide- open fields. Alongside the flowers, the festival connects visitors with art exhibits, family-friendly activities, and community events hosted throughout the region.

Bloom timing changes every year, making each visit a little different, so checking bloom updates is part of the adventure. What began as a small local celebration in 1984 has grown into one of the Pacific Northwest's most loved spring traditions, drawing photographers, nature lovers, and road trip enthusiasts eager to welcome the season.

安扎-博雷戈沙漠州立公园上空的银河, 加利福尼亚州, 美国 Milky Way over Anza-Borrego Desert State Park, California, USA (© Kevin Key/Slworking)/Getty Images)

当灯光熄灭之后 After the lights go down

银河

当夜幕降临，宇宙便开始上演一场壮丽的“光影秀”。每年四月举行的国际暗夜周，邀请人们重新发现夜晚的魅力，并了解为什么黑暗同样值得被保护。这项活动始于2003年，旨在提醒公众关注过度的人造光照对野生动物、人类健康、能源消耗以及我们观测星空能力所带来的影响。减少不必要的灯光并不意味着降低安全性——通过科学、合理的照明设计，完全可以在保证安全的同时减少光污染。

这张银河高悬在安扎-博雷戈沙漠州立公园上空的照片，正好诠释了这一理念。作为加利福尼亚州最大的州立公园**，这里同时也是被正式认定的国际暗夜公园，因此拥有全美一流的观星条件。在晴朗的夜晚，天空中会出现行星、星团以及我们所在星系——银河系那条明亮的星带。这样的壮丽景象，在许多城市地区由于光污染已经很难看到了。

国际暗夜周鼓励人们从一些简单的行动做起，例如为门廊灯加装遮光罩，或参加当地的观星活动。抬头仰望夜空，保持好奇心，也一起努力，让夜晚继续保有自然的璀璨星光。

International Dark Sky Week

When the lights go down, the universe puts on a show. International Dark Sky Week, celebrated each April, invites everyone to rediscover the night and learn why darkness is worth protecting. Launched in 2003, the week highlights how excessive artificial light affects wildlife, human health, energy use, and our ability to see the stars. Fewer lights don't mean less safety—smart, well-designed lighting can do both.

The image of the Milky Way glowing above Anza-Borrego Desert State Park captures this idea perfectly. As California's largest state park and an officially designated International Dark-Sky Park, Anza-Borrego offers some of the best stargazing in the country. On a clear night, the sky fills with planets, star clusters, and the bright band of our home galaxy—views that have vanished from many urban areas.

International Dark Sky Week encourages simple actions, from shielding porch lights to joining a local star party. Look up, get curious, and help keep nights naturally brilliant.

城市灯光在下方划过, 拍摄于国际空间站 City lights streak below, taken from the International Space Station (© NASA)

离开地球的第一步 The first step off Earth

国际人类航天日

今天，世界纪念国际载人航天日，这是联合国设立的纪念日，旨在纪念人类首次进入太空的旅程以及人类太空时代的开始。这个日期回忆起1961年4月12日，尤里·加加林绕地球飞行，证明人类可以离开地球并安全返回。

这种探索精神在国际空间站上依然存在。从国际空间站上，宇航员拍摄发光的城市网格和穿越地球大气层的强烈雷暴——这些景象将科学变成了魔法。空间站绕地球运行的高度大约为250英里，每90分钟环绕地球一圈，使船员每天最多可以看到16次日出和日落。自2000年以来，空间站一直有人居住，由美国、俄罗斯、欧洲、日本和加拿大的合作伙伴共同运营。在空间站内部，宇航员进行推进医学、材料和气候科学的研究，同时也学习人类如何在离地球更远的地方生活和工作。

International Day of Human Space Flight

Today, the world marks the International Day of Human Space Flight, a United Nations observance honoring the first human journey into space and the start of the space age for humanity. The date recalls April 12, 1961, when Yuri Gagarin orbited Earth, proving that people could leave the planet and return safely.

That spirit of exploration lives on aboard the International Space Station. From the ISS, astronauts photograph glowing city grids and powerful lightning storms streaking through Earth's atmosphere—views that turn science into magic. Orbiting about 250 miles above the planet, the station circles Earth every 90 minutes, giving crews up to 16 sunrises and sunsets a day. It has been continuously occupied since 2000 and is operated by a partnership of the United States, Russia, Europe, Japan, and Canada. Inside, astronauts conduct research that advances medicine, materials, and climate science, while also learning how humans can live and work farther from home.

帕帕加约海滩, 兰萨罗特, 加那利群岛, 西班牙 Papagayo Beach, Lanzarote, Canary Islands, Spain (© Gavin Hellier/Getty Images)

火山外衣 Volcanic veneer

帕帕加约海滩, 兰萨罗特, 加那利群岛, 西班牙

由火焰孕育而成的海滩很少能如此低调，而帕帕加约海滩正好做到了这一点。我们今天看到的海岸线位于西班牙加那利群岛兰萨罗特岛的南端。热带幻想？更像是火山般的精准。数百万年前，这片土地在海底火山喷发的推动下，逐层由玄武岩和火山灰堆积升起。

约400英尺长的小海湾给人一种亲密的感觉。它坐落在洛斯阿乔奇自然纪念地内，仍然受到保护，并故意保持低调。曾经，这里为在非洲和欧洲之间航行的水手提供庇护。如今，人们可以步行、乘船或沿着著名的颠簸土路到达这里——通过不便实现保护。悬崖环绕着海湾，形成天然的防波堤，使大西洋的海水在这里变得平静而清澈。鱼在光影中闪动，螃蟹在潮间带巡逻，章鱼消失在岩石之间。沙子的温暖金色调来自粉碎的贝壳与火山岩的混合，经过千年潮汐的精炼。帕帕加约的魅力在于其对比：由火山喷发锻造，由侵蚀塑形，并通过克制得以保存。

Papagayo Beach, Lanzarote, Canary Islands, Spain

A beach born from fire rarely does so subtly, yet Papagayo Beach manages exactly that. The shoreline we see today rests on the southern edge of Lanzarote, one of Spain's Canary Islands. Tropical fantasy? More like volcanic precision. Millions of years ago, this land rose in successive layers of basalt and ash thrust upward by submarine eruptions.

About 400 feet long, the cove feels intimate. Nestled within Los Ajaches Natural Monument, it remains protected and deliberately low-key. Once, it sheltered sailors navigating between Africa and Europe. Today, it is reached by foot, boat, or a famously bumpy dirt road—preservation by inconvenience. Cliffs arc around the bay, forming natural breakwaters that temper the Atlantic into calm, clear shallows. Fish flicker through the light, crabs patrol the tidal edges, and octopuses vanish into stone. The sand's warm, golden tone? Pulverized shells mixed with volcanic rock, refined by millennia of tides. Papagayo's power lies in its contrasts: forged by eruption, shaped by erosion, and preserved by restraint.

雪落瀑布，布雷肯比肯斯国家公园，威尔士 Sgwd yr Eira waterfall, Brecon Beacons National Park, Wales (© Guy Edwardes/Nature Picture Library)

光之水帘 Veil of light

雪落瀑布，布雷肯比肯斯国家公园，威尔士

清澈的水流沿着岩壁整齐地倾泻而下，形成了这座瀑布，这是威尔士南部最具特色的瀑布之一。它的威尔士语名称意为“雪落瀑布”，形容水流像一层淡白色的水帘从岩壁上滑落。这座瀑布的独特之处在于可以从瀑布后方穿行。一条狭窄的小径将游客引到水帘背后，让人近距离感受水声、光线与水雾交织的自然景象。

雪落瀑布位于布雷肯比肯斯国家公园内。这里因众多河流与瀑布在森林峡谷间交错分布，而被称为“瀑布之国”。标识清晰的步道沿着赫普斯特河将多处瀑布连接起来，使这里成为长距离徒步路线中的热门停留点。

在峡谷之上，地貌逐渐过渡为起伏的荒原与绵延的山脊。高地上的步道常常受到强风与多变天气的影响。这种从开阔高地到隐秘水谷的鲜明对比，正是布雷肯比肯斯国家公园独特景观的重要特征。

Sgwd yr Eira waterfall, Brecon Beacons National Park, Wales

Water spills in clean lines at Sgwd yr Eira, one of South Wales' most distinctive waterfalls. Its Welsh name means 'Waterfall of Snow,' referring to the pale curtain of water sliding over the rock face. What sets this waterfall apart is access. A narrow path leads visitors behind the falling water, immersing them in sound, light, and movement at close range. Sgwd yr Eira lies within Brecon Beacons National Park, often called 'Waterfall Country' for its network of rivers and falls carved into wooded gorges. Well-marked trails connect this waterfall to others along the River Hepste, making it a popular stop on longer hikes. Above the valleys, the landscape opens into rolling moorland and long ridgelines where upland paths are shaped by wind and changing weather. These contrasts define the Brecon Beacons, where open, exposed uplands give way to sheltered water, tying the landscape together.

西雅图，华盛顿州，美国 Seattle, Washington, USA (© Jim Patterson/Tandem Stills + Motion)

翡翠之城 The Emerald City

西雅图，华盛顿州

每年4月7日的国际河狸日，旨在致敬这位默默工作的“小工程师”。河狸凭借一根根树枝，悄然改变着自然环境。河狸长着标志性的门牙和桨状尾巴，以勤劳著称。数百万年来，它们一直在重塑淡水生态环境。河狸拥有呈橙色、富含铁质的坚硬门牙，可以轻松啃倒树木，并利用树枝和泥土建造水坝。这些水坝能够减缓水流、改善水质，并形成湿地，从而为多种动植物提供栖息地。它们还会用树枝和泥土搭建坚固的巢穴，入口通常位于水下，不仅能躲避捕食者，也为整个家族提供安全的居所。

作为世界上体型最大的啮齿动物之一，河狸的身体长度（不含尾巴）可接近 3 英尺（约 90 厘米）。它们对水生环境具有出色的适应能力，一次潜水最长可达约 15 分钟。过去，河狸曾因皮毛贸易而被大量捕猎，也常被人们误解。但如今，它们被广泛认为是重要的生态工程师。无论河狸在哪里定居，它们建造的水坝和湿地都会孕育出丰富的生命环境——证明即使是看似不起眼的“建筑者”，也能塑造庞大的生态系统。

Seattle, Washington

Seattle's waterfront seems suspended between sea and sky as soft light settles on the horizon. The city is named after Chief Si'ahl, a leader of the Duwamish and Suquamish peoples, whose legacy remains important to the region's identity. Steep streets lead down to piers that sweep across Elliott Bay. Rising above the shoreline, the Space Needle stands out as the city's most recognizable landmark. Pike Place Market, founded in 1907, overlooks the waterfront and continues to anchor daily life and long-held traditions.

Music adds another layer to the city's story. In the late 20th century, grunge emerged from small clubs, and its raw sound evolved into a global genre that continues to influence Seattle's creative pulse. Framed by water and distant mountain ranges, the city feels open and expansive. Its evergreen landscape earned Seattle the enduring nickname 'Emerald City.'