A 74-year-old man is pounding(沉重地走)the pavement in the hope of finding a kidney for his sick wife. Wayne Winters began walking along the streets near his home in Farr West, Utah early this month with a sandwich board containing an unusual request. “Need Kidney for Wife, "the sign reads. Winters' phone number and his wife Deanne's blood type are also included.

Deanne has severe kidney failure and is in need of a transplant. Desperate to do something to help his sick wife, Winters walks along the streets armed with a new suitnew shoes, and his sign with a piea(恳请)for a kidney. Though he doesn' t walk fast. Winters' unusual method of tracking down a kidney for Deanne has attracted plenty of attention. In addition to the motorists and passers-by who have seen Winters out walking miles a day, his request for a kidney has now hit the In ternet and attracted the attention of millions more people.

Winters said he was inspired to pound the pavement on behalf of his wife after seeing a story online about another man who did the same thing and got national attention. Rush hour is his favorite time to walk up and down the streets because drivers are slowed down.

Though he hasn't had any success yet, Winters remains confident he will find a kidney for

Deanne, and says he won’t rest until he makes it. Winters has stated even after a match for Deanne is found, he will continue to raise awareness about kidney donation because it is now his Mlife mission". In fact, the back of his current sign includes a message aimed at helping others in need. It read," 1,000 kidneys are needed in Utah and Idaho. "

The National Kidney Foundation reports the average wait for an individual s first kidney transplant is over three and a half years, and can vary depending on health, compatibility（兼 容性）and availability of organs. The organization also notes over 3,000 new patients are added to the kidney waiting list each month, and 13 people die each day while waiting for a life-saving kidney transplant.

The number of snow geese arriving in the Arctic each spring to breed has risen over the past few decades. At first, wildlife biologists saw this as an environmental crisis, pointing to marshes（沼泽地）where plants were eaten by the hungry birds, and the federal government responded by loosening restrictions on snow goose hunting across the country. But how do the Inuit（因纽特人），in whose backyard this is taking place, and for whom fresh goose eggs and meat are among the pleasure of an Arctic spring, view the situation? A recent study is bringing Inuit wildlife experts and scientists together to look for common ground on managing the species.

The snow goose study asked experts in Coral Harbour and Arviat, on the north and west coast of Hudson Bay, to share their generations of knowledge about snow geese and their views on what should be done. “ The community had concerns about controlling the population," says Ron Ningeongan, a community officer for the Kivalliq Inuit Association in Coral Harbour, "and Inuit snow goose knowledge had never been recorded. People wanted to pass on what they knew. "

The Inuit experts rejected the idea of a cull(选择性宰杀），considering it wasteful of the geese and unnecessary for the environment in general, but felt that hunting more geese in an organized way—for instance, paying local hunters a minimum amount of money and distributing the birds to disadvantaged families or operating a limited commercial hunt that would employ local people—would be appropriate.

The Inuit say that while there may be too many snow geese in some areas, it's not a crisis. Biologists now generally agree that there seem to be plenty of undamaged marshes available and newer research shows that some damaged areas can recover.

Conservation planners for the three migratory bird reserves in the area will use the study's recommendations, which is an excellent example of how indigenous （土著的） knowledge can strengthen wildlife management Johnson says.

“Now that we have recorded and documented Inuit knowledge of snow geese," says Ningeongan. "when facing the crisis again, other people will be able to use the information to help manage the species, which is fundamental to dealing with it effectively. ”

In 1969, when Neil Armstrong became the first person to walk on the moon . the astronomical body was for Chinese just a glowing orb （圆形物）overhead to stare at and muse about. Now, fifty years later, China has become the first nation to land a robotic spacecraft on the far side of the moon.

As the world celebrates the historic US moon landing on July 20, 1969, Chinese lunar explorers said their moon exploration program, including plans for a robotic lunar research station prototype （原型）by 2030 to prepare manned missions, is open to international cooperation.

The lunar research station will become a base for astronauts to visit briefly and ultimately for a long-term stay, according to Li Chunlai, director of the Ground Research and Application System of the Chinese Lunar Exploration Project, and three of his colleagues. "International cooperation is an important element in China's strategy of lunar and deep space exploration," they wrote in an article published on Friday in a special issue of the US journal Science to mark the anniversary of the Apollo 11 moon landing.

In 2004, China unveiled a three-phase robotic lunar exploration program —orbiting, landing and returning- naming it the Chang e Project. Four missions were conducted between 2007 and 2019, with Chang e-4 deploying（部署）a lander and the Yutu-2 rover on the surface of the far side of the moon in early January. The fifth mission, scheduled for early next year. is to return rocks to Earth from a lunar area that has not yet been sampled（取样），according to the article s authors.

The authors wrote that China is open to cooperation with NASA on lunar exploration. "Both sides can start cooperating on aspects such as exchange of scientific data and space situational awareness information," the article said. "China also looks forward to exploring more opportunities to cooperate with NASA to preserve the space environment for generations to come. ”

Already, China's latest lunar mission Chang e-4 has carried out experiments from Germany, Sweden and the Netherlands （荷兰), it said. In April, the China National Space Administration announced cooperation opportunities for China s sixth lunar mission and its asteroid（小行星）exploration mission. It also signed lunar exploration cooperation agreements with the United Nations Office for Outer Space Affairs. Turkey, Ethiopia and Pakistan.