2 . In British Bristol, 70 English women at once entered into legal "marriage" with dozens of trees in protest (反对，抗议) against their being cut down. They "married" the trees in an attempt (试图) to prevent them from being cleared for construction (建造) of residential buildings worth £55 million in the forest. The British construction company has applied for the construction of 166 houses in Bristol, including luxury (奢华的) cottages. At the same time, the townspeople were especially angry at the fact that the application did not show the exact number of trees that are planned to be cut down. So, in order to attract the attention of the government, the activists organized an unusual wedding ceremony to save the forest.

The event took place at a park on Spike Island. The women who went there, dressed in wedding dresses, held photographs of the "suitors" in their hands. The celebration itself took place according to the classic storyline—with groomsmen and wedding vows (誓词). The organizer was John Tarleton, a professor at the Bristol Veterinary School, According to him, this action was supposed to suggest that tees are partners of people throughout their life.

The idea to hold such a ceremony came from Siobhan Kierans, who admitted that she came up with it by the story of women from the environmental movement Chipko, who chained (链在一起) themselves to trees in the 1970s to save them from destruction by logging companies.

The protesters said that Bristol needs trees more than luxury private housing. One of the "brides", Suzan Hackett, said, "To get married to a tree is a real honor. It's not a show. It's highly significant (important) and symbolic."

3 . Scientists often compare coral reefs(珊瑚礁) to underwater rainforests, yet unlike the leafy plant base of a forest, corals are animals. The soft creatures are naturally half-transparent and get their brilliant color from algae(藻类) living inside them. When corals experience stress from hot temperatures or pollution, they halt the interdependent relationship with algae, typically pushing them out and turning white. Corals are still alive when they are white, but they're at risk and many eventually die, turning dark brown.

Scientists around the world are looking for means to protect and maybe increase corals. One common option is to create more protected areas — essentially national parks in the ocean. Beyond nature preserves, some conservationists are looking to more hands-on methods. One research center in the Florida Keys is exploring a form of natural selection to keep corals remaining. The reef system in the Keys has been hit hard by climate change and pollution, which is especially tough, because corals there help support fisheries worth $ 100 million every year.

To keep the wild ecosystem alive, Erinn Muller, the center's director, and her team are harvesting samples of the corals that survived the environmental stress naturally, keeping them to make them reproduce, and then reattaching them to the reef. They have 46,000 corals on plastic frames under the sea. So far, the center has regrown over 70,000 corals from five different species on damaged reefs.

In The Bahamas, Ross Cunning, a research biologist at Chicago's Shedd Aquarium, focuses on corals with genes that could make them natural candidates for restoration projects. He published a study of two Bahamian reefs, one that survived an extreme 2015 heat wave, and one that didn't. "We think their ability to deal with these higher temperatures is built into their genes," says Cunning. There's evidence of corals evolving more quickly to resist rapidly warming climate. The big question scientists need investigate, adds Gunning, is how much more heat corals can adapt to.

4 . A very dangerous situation happened in California last week. More than 12 wildfires broke out in the state. Most of them began on October 8, in Northern California. They grew rapidly. The fires were made bigger by winds of up to 50 miles per hour and dry air in the area.

At least 20 people have been killed, the state government said. About 200 have been injured. At least 3,500 homes and businesses have been destroyed. About 50,000 people have been required to escape. Many left in a hurry, without time to take their personal things. “All the good stuff(东西)—I’m never going to see it again,” Jeff Okrepkie said. He escaped from his Santa Rosa home. It was destroyed soon after he left.

The fires burned through parts of eight counties(郡，县). These include Sonoma and Napa. The areas are important to California’s economy(经济). They are home to many of the state’s vineyards(葡萄园) and wineries(酿酒厂). In 2016, California’s wineries made more than $57 billion.

October is when wildfires usually produce the most ruins in California. But it is unusual for so many fires to start at once. Up to now, the government has not given a cause for any of the fires, many of which were still burning.