8集自然纪录片--Our Planet
这是2026年2月24日，农历正月初八，年后口语粉碎机打卡《Our Planet》主题第一天。
Just 50 years ago, we finally ventured to the moon. For the very first time, we look back at our own planet. Since then, the human population has more than doubled. This series will celebrate the natural wonders that remain, and reveal what we must preserve to ensure people and nature thrive.
Episode 1：One Planet
When human beings built their first settlements some 10,000 years ago, the world around them, on the land and in the sea, was full of life. For generations, this stable Eden nurtured our growing civilizations. But now, in the space of just one human lifetime, all that has changed. In the last 50 years, wildlife populations have, on average, declined by 60 percent.
For the first time in human history, the stability of nature can no longer be taken for granted. But the natural world is resilient. Great riches still remain. And with our help, the planet can recover.
Never has it been more important to understand how the natural world works, and how to help it. Wildlife still flourishes in astonishing numbers in a few precious places. Along the Peruvian coast of South America, seabirds congregate in colonies millions strong. They come here to breed.
Every morning, the birds leave their colonies to fish in one of the richest seas on Earth. It is an astonishing daily migration of five million birds. The huge flocks of cormorants and boobies are all seeking one thing: anchovies. The boobies carpet-bomb the shoals. More and more birds join the feeding frenzy.
All in this immense assembly are here because a powerful oceanic current, the Humboldt, sweeps up from the Antarctic, bringing with it rich nutrients from the ocean’s depths. 90 percent of the life in the oceans is found in the shallow seas close to the coast. Away from the land, the seas, for the most part, are a blue desert. But even these distant waters may be enriched by a most unexpected connection to the land.
Some deserts, often hundreds of kilometers from the ocean, provide the raw materials for life. Every year, winds sweep up two billion tons of dust into the sky. At least a quarter of it eventually falls on the sea, providing nutrients needed by the microscopic organisms that are the foundations of ocean life. Dolphins explore the vast, open ocean in search of the riches that distant deserts may have nourished.
A shoal of mackerel has discovered a swarm of krill the small crustaceans that feed on the ocean’s floating microscopic plants. But the mackerel themselves are food for the dolphins. They drive the mackerel towards the surface, and into the range of birds. Shearwaters. The wings that normally propel the birds through the air now drive them six meters down through the water.
Whilst the birds pick off the top of the shoal, the dolphins attack the underside. After 20 minutes of feasting, the predators from both the sea and the air have had their fill. The stability of life on our planet relies on such connections between different habitats. Water evaporating from the surface of the sea condenses to form great clouds.
And these eventually release the fresh water as rain. But these life-giving rains are not evenly spread over the land. This vast salt pan in Africa is all that remains of an ancient lake. It’s totally waterless and oven-hot.