After nearly 70 years of indecision, China has decided to build the
world’s largest dam, across the Yangtze River.
A summer of floods and the continuing ascendancy of Marxist planners
in Beijing have combined to defeat objectors to the scheme.
An early start to the Three Gorges Dam is now seen as ‘inevitable’ in
order to control flooding in central and eastern China, according to a report
by the Minister of Water Conservancy, Yang Zhenhuai. Last month he presented
the report to a committee of China’s nominal parliament, the National People’s
Congress. It won the backing of congress chairman Wan Li, who called for
the dam’s construction to be included in China’s next 10-year development
plan, which begins this year.
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China’s cabinet, the State Council, is expected to give the go-ahead
to start construction later this year. Once approved, the decision is certain
to be rubber-stamped by the congress next spring.
The dam will create a lake nearly twice the area of the Isle of Wight.
It is known to be the pet project of the Chinese premier, Li Peng, who was
trained as an engineer.
This summer’s floods along the Huai River – a tributary of the Yangtze
– and around Tai Lake were reportedly the worst this century. In July, water
covered more than 20 million hectares of farmland – an area close to that
of England and Scotland combined. More than 2000 people died and a million
were made homeless.
Hardline Communist leaders have used the crisis to justify centralised
control. Flood management has been given high priority within the new development
plan. The New China News Agency says some £24 billion will be available
for dams, dykes and irrigation through the 1990s. At least 10 dams are planned
to harness China’s major rivers, including the Yellow River, the Pearl River,
the Min Jiang and the Li Shui.
The Three Gorges Dam is the centrepiece of plans to control flooding
along the middle and lower reaches of the Yangtze. Its 26 generating units
will produce 84 billion kilowatt-hours of electricity a year, equivalent
to one-sixth of China’s electricity output.
Planners have blamed flooding and poor agricultural production on the
failure to push ahead with large water projects. Causes such as deforestation
along the upper reaches of the Yangtze and in Tibet have largely been ignored.
Opposition to the project from scientists and environmentalists has
been quashed by the political crackdown that began in Tiananmen Square.
Among the most prominent opponents of the scheme was the journalist Dai
Qing, who was jailed for 11 months for her support of the 1989 student movement.
Opponents warned that the project will be an environmental disaster, upsetting
the ecological balance in the Yangtze gorges – one of China’s most famous
areas of natural beauty.
The project will require up to 1.7 million people to be resettled and
the cost of building it is expected to be £6.6 billion.



![Astronomers have long known that understanding how star clusters come to be is key to unlocking other secrets of galactic evolution. Stars form in clusters, created when clouds of gas collapse under gravity. As more and more stars are born in a collapsing cloud, strong stellar winds, harsh ultraviolet radiation and the supernova explosions of massive stars eventually disperse the cloud, and their light can bear down on other star-forming regions in the galaxy. This process is called stellar feedback, and it means that most of the gas in a galaxy never gets used for star formation. Researching how star clusters develop can answer questions about star formation at a galactic scale. Now, the state of the art has been further developed with both Hubble and Webb working together to provide a broad-spectrum view of thousands of young star clusters. An international team of astronomers has pored over images of four nearby galaxies from the FEAST observing programme (#1783), trying to solve this mystery. Their results show that it is the most massive star clusters that clear away their gaseous shroud the fastest, and begin lighting their galaxy the earliest. The team identified nearly 9000 star clusters in the four galaxies in different evolutionary stages: young clusters just starting to emerge from their natal clouds of gas, clusters that had partially dispersed the gas (both from Webb images), and fully unobstructed clusters visible in optical light (found in Hubble images). With Webb???s ability to peer inside the gas clouds, they were able to then estimate the mass and age of each cluster from its light spectrum. This image shows a section of one of the spiral arms of Messier 51 (M51), one of the four galaxies studied in this work, as seen by Webb???s Near-Infrared Camera (NIRCam). The thick clumps of star-forming gas are shown here in red and orange, representing infrared light emitted by ionised gas, dust grains, and complex molecules such as polycyclic aromatic hydrocarbons (PAHs). Within these gas complexes, each tens or hundreds of light years across, Webb reveals the dense, extremely bright clusters of massive stars that have just recently formed. The countless stars strewn across the arm of the galaxy, many of which would be invisible to our eyes behind layers of dust, are also laid bare in infrared light. [Image description: A large, long portion of one of the spiral arms in galaxy M51. Red-orange, clumpy filaments of gas and dust that stretch in a chain from left to right comprise the arm. Shining cyan bubbles light up parts of the gas clouds from within, and gaps expose bright star clusters in these bubbles as glowing white dots. The whole image is dotted with small stars. A faint blue glow around the arm colours the otherwise dark background.]](https://images.newscientist.com/wp-content/uploads/2026/05/13114322/SEI_296271016.jpg)