3 . British artist Amy Sharrocks collects nearly all kinds of water. In 2013 she set up the Museum of Water, a live piece of artwork that travels all over the world and invited people to donate water—from spit to melted snow—in a bottle and discuss what it means to them.

The program aims to understand why people treasure water and help prepare them for a drier future and climate，Ms. Sharrocks told an audience of climate experts, activists and museum curators(馆长). ''For example, we show them how to have three minute showers to better deal with water shortages，'' she said.

Amy is not alone as a matter of fact. As world leaders increasingly face up to the serious results of climate change，curators are planning a new wave of museums, which are devoted to what many consider a vital issue of the times. In 2015, a former lawyer Miranda Massie created the first United States museum which was entirely devoted to climate change in New York City. ''Climate change is affecting virtually every aspect of our lives，'' Ms. Massie said. ''But we can't fight the problem with topdown policies alone. We need the public to participate and museums are a way to open people's mind to what matters. ''

Bridget McKenzie, director of Flow Associates, wanted to raise awareness of the dilemma of the Pacific island nations, which are particularly vulnerable(易受伤害的) to rising sea level. So with her team she set up a ''ghost boat'' made of old fish nets at the University of Cambridge's Museum of Archaeology and Anthropology, and asked visitors what they would take with them if they were suddenly forced to leave their homes.

While museums can be a powerful way of communicating the effects of climate change, they should also practice what they spread and control their own emissions (排放物). ''Roughly half of cities' emissions come from energy use in buildings, '' said Elliot Goodger, a museums' association representative of the West Midlands in Britain，''museums have a duty to be energy efficient, for example, by using laser lighting for displays or improving their building materials. ''

4 . TUVALU, a tiny country in the Pacific Ocean, has asked for help as it fears it will be swallowed up by the sea. Storms and huge waves are a constant threat and none of Tuvalu’s nine little islands is more than five meters above sea level, Salt water is already entering the country’s drinking water supply, as well as damaging plants that produce fruit and vegetable.    1    .

    2    . Venice, a historic city in Italy best known for its canals, has sunk about 24 cm over the past 100 years. Experts say that it will have sunk another 20-50cm by 2050. A century ago, St. Mark’s Square, the lowest point in the city, floodedd about nine times a year, Nowadays, it happens more than 100 times. While Venice is slowly sinking into the mud on which it stands, Tuvalu’s rising sea level is caused by global warming.The average global temperature has increased by almost 0.5 centigrade degrees over the past century; scientists expect it to rise by extra 1-3 degrees over the next 100 years.Warmer weather makes glaciersmelt, adding more water to the ocean. The warmer temperatures also make water expand, so it takes up more space, causing the sea level to rise. The sea level has risen about 10－25 cm in the last 100 years.    3    .

Through burning coal, oil and gas, people have been increasing the greenhouse gases in the atmosphere, such as CO₂. This adds to the power of the greenhouse effect, making the planet even warmer. Many scientists believe that, if the warming is not stopped, there will be huge climate changes.    4    .

    5    , the sea will swallow up millions of homes and the world will be flooded with “climate refugees” looking for somewhere to live.