China's State Council, the cabinet, on Friday studied policy measures to develop the "silver economy," or the elderly care industry, which is widely expected to account for one-third of China's economy by 2050 given the country's ageing population.

An executive meeting of the State Council noted that developing the silver economy is a crucial measure to actively respond to the aging population and promote high-quality development, and is beneficial both in the short term and in the long run, according to the Xinhua News Agency.

The meeting noted the need to fulfill the government's responsibility of ensuring basic needs and to safeguard the bottom line, strengthen basic livelihood protection for the elderly, and increase the supply of basic public services. It also called for giving the market full play to better meet the multi-level and diverse needs of the elderly, and to jointly promote the development and growth of the silver economy.

The meeting noted that relevant policy measures should be continuously improved to tackle urgent problems such as home care and healthcare for the elderly.

China has been stepping up efforts to develop the silver economy in recent years in an effort to handle the aging population, which has become a hot topic in global headlines.

In February 2022, the State Council issued a plan for the development of the country's elderly care services system during the 14th Five-Year Plan period (2021-25), which included major goals in various aspects, including expanding the supply of elderly care services and improving the health support mechanism for the elderly.

In May, China released a guideline to build a basic elderly care system by 2025, offering coverage for the entire elderly population, according to Xinhua.

China's elderly population aged 60 and above reached more than 280 million by the end of 2022, accounting for 19.8 percent of the total population, and by 2050, the elderly could account for one-third of China's total population, according to a report in the Economic Daily newspaper.

With the rising elderly population also comes vast potential for the "silver economy." According to the Economic Daily report, the elderly care market could account for one-fifth of China's GDP by 2030 and one-third of China's total GDP by 2050.

A previous report from Fudan University in Shanghai said that the "silver economy" could reach 1.9 trillion yuan by 2035, accounting for 9.6 percent of China's total GDP.

The historical drama Qu Yuan will be staged in Shanghai this weekend, telling audiences a story of one of the greatest patriotic poets in ancient China, as well as the splendid early Chinese culture of his time.

The play is based on the life story of Qu Yuan, a statesman and poet of the State of Chu during the Warring States Period (475BC-221BC), today the central and southern areas of China.

Witnessing the fall of Chu's capital, its people's displacement as well as the loss of land, Qu refused to align himself with the corrupt officials or yield to oppressive forces. He eventually drowned himself in the Miluo River in Central China's Hunan Province, completing the magnificent patriotic anthem that he had composed with his own life.

On stage, the story is going to be told using flashbacks, starting with Qu's last days before he drowned himself in despair. This part will be the biggest highlight of the whole play, said the play's director Guo Xiaonan.

"Qu had a great affection for saving humanity. His spiritual realm was far beyond that of ordinary people, which brought him a unique sense of spiritual loneliness," Guo told the Global Times in an exclusive interview on Wednesday.

"Qu also had a deep love for his state. When his ideals and ambitions in life were shattered, he chose to end his life, which I think was not a simple suicide, but a sublimation of his soul," Guo said.

"This spirit has influenced Chinese culture for more than 2,000 years, and also is the strongest part of the play."

Legend has it that after his death, the Chu people were deeply saddened and flocked to the river to pay their respects. China's time-honored Dragon Boat Festival, which falls on the fifth day of the fifth month of the Chinese lunar calendar, commemorates Qu.

Qu was listed as one of the world's four literary celebrities by the World Peace Council in 1953, the other three being Francois Rabelais, Nicolaus Copernicus and William Shakespeare. He left many immortal literary works to later generations, such as Chu Ci, or Songs of Chu, and Jiu Ge, or The Nine Songs.

His famous literary works will be presented in the drama to create a strong emotional resonance with the audience.

Guo said he believes one line from Qu's poetry will resonate the most with the audience: "Long as the way is, I will keep on searching high and low." 

This well-known line embodies human being's exploration of the meaning of life, and the great spirit of perseverance and active endeavor, said Guo.

"Qu and his cultural imprint are a precious spiritual wealth not only of the Chinese nation, but also the whole humanity," he noted.

Apart from Qu's life and his spiritual world, the play will also highlight the culture of Qu's homeland Chu, a charming part of early Chinese culture.

According to Guo, the play will showcase lacquerwares and bronze wares of that time through props, lighting and dances, opening a window for the audience to view the representative culture from the 800-year history of Chu.

The play is being produced by the Hubei Changjiang People's Art Theatre and Hubei Sanxia Performance Arts Group. It is scheduled to be staged at Shanghai's Majestic Theatre on Saturday and Sunday night, as a part of the ongoing 22nd China Shanghai International Arts Festival.

A new species of hermit crab discovered in the shallow waters of southern Japan has been enjoying the perks of living like a peanut worm. Like the worms, the 7- to 8-millimeter-long hermit crab uses corals as a covering, researchers report September 20 in PLOS ONE.

Other kinds of hermit crabs live in coral reefs, but typically move in and out of a series of mollusk shells as the crabs grow. Diogenes heteropsammicola is the first hermit crab known to form a mutually beneficial relationship with two species of mobile corals called walking corals. Unlike more familiar coral species, these walking corals don’t grow in colonies and aren’t attached to the seafloor. Instead, each host coral grows with and around a crab, forming a cavity in the coral skeleton that provides a permanent home for the crustacean. In exchange, the crab helps the coral “walk.”
Walking corals are already known to be in a symbiotic relationship with a different sea creature — flexible, marine peanut worms called sipunculids. A symbiotic shift between such distantly related species as the worms and the crab is rare because organisms in a mutualistic relationship tend to be specialized and completely dependent on one other, says study coauthor Momoko Igawa, an ecologist at Kyoto University in Japan.
But similar to the worms, D. heteropsammicola appears to be well-adapted to live in the corals. Its extra slim body can slip inside the corals’ narrow cavity. And unlike other hermit crabs — whose tails curve to the right to fit into spiral shells — D.heteropsammicola’ s tail is symmetrical and can curl either way, just like the corals’ opening.
“Being able to walk around in something that is going to grow larger as you grow larger, that’s a big plus,” says Jan Pechenik, a biologist at Tufts University in Medford, Mass., who was not involved in the study. A typical hermit crab that can’t find a larger shell to move into “really is in trouble.”

D. heteropsammicola’s relationship with walking corals may begin in a similar way as it does with sipunculan worms, Igawa says. A walking coral larva latches onto a tiny mollusk shell containing a juvenile hermit crab and starts to grow. When the hermit crab outgrows the shell, the crustacean moves into the readily available host coral’s crevice, and the shell remains encapsulated in the coral.

By observing the hermit crab in an aquarium, Igawa and coauthor Makoto Kato, also an ecologist at Kyoto University, determined that the crab provides the corals with the same services as the worms: transportation and preventing the corals from being overturned by currents or buried in sediment.

Igawa hopes to search for this new hermit crab in Indonesia, a region where walking corals are normally found. Plus, because walking coral fossils are easy to come by in Japan, she also wants “to reveal the evolutionary history of the symbioses of walking corals [with] sipunculans and hermit crabs by observing these fossils.”

WASHINGTON, D.C. — If it takes you a while to recover from a few lost hours of sleep, be grateful you aren’t an orb weaver.

Three orb-weaving spiders — Allocyclosa bifurca, Cyclosa turbinata and Gasteracantha cancriformis — may have the shortest natural circadian rhythms discovered in an animal thus far, researchers reported November 12 at the Society for Neuroscience’s annual meeting.

Most animals have natural body clocks that run closer to the 24-hour day-night cycle, plus or minus a couple hours, and light helps reset the body’s timing each day. But the three orb weavers’ body clocks average at about 17.4, 18.5 and 19 hours respectively. This means the crawlers must shift their cycle of activity and inactivity — the spider equivalent of wake and sleep cycles — by about five hours each day to keep up with the normal solar cycle.
“That’s like flying across more than five time zones, and experiencing that much jet lag each day in order to stay synchronized with the typical day-night cycle,” said Darrell Moore, a neurobiologist at East Tennessee State University in Johnson City.

“Circadian clocks actually keep us from going into chaos,” he added. “Theoretically, [the spiders] should not exist.”

For most animals, internal clocks help them perform recurring daily activities, like eat, sleep and hunt, at the most appropriate time of day. Previous studies have shown that animals that are out of sync with the 24-hour solar cycle are usually less likely to produce healthy offspring than those that aren’t.
Moore and his colleagues were surprised to find the short circadian clocks while studying aggression and passivity in an orb weaver. The team was trying to see if there was a circadian component to these predatory and preylike behaviors, when they discovered C. turbinata’s exceptionally short circadian cycles. “I was looking at this thing thinking, ‘That can’t be right,’” said Moore.

To measure spiders’ natural biological clocks without the resetting effect of the sun, the researchers placed 18 species of spiders in constant darkness and monitored their motion. Three orb weaver species in particular had incredibly short cycles of activity and inactivity.

As far as the researchers know, the short cycle does not seem to be a problem for these spiders. In fact, it might even be useful. Short clocks may help these orb weavers avoid becoming the proverbial “worm” to the earliest birds, the researchers hypothesize. Since the spiders become more active at dusk and begin spinning their webs three to five hours before dawn, they can avoid predators that hunt in the day.

Throughout the day, the spiders remain motionless on their web, prepared to pounce on their next meal. By midday, the spiders’ truncated circadian clocks should have reset, sparking a new round of activity. But in the five to seven hours of daylight left, the orb weavers remain inactive. It’s hard to say whether the spiders are actually resting, Moore said. The researchers suspect that light may delay the onset of another short circadian cycle each day, helping the spiders stay synchronized with the 24-hour environmental cycle.

“The method or molecular mechanism will be really fascinating to figure out,” said Sigrid Veasey, a neuroscientist at the University of Pennsylvania’s Perelman School of Medicine. She is curious to know how the spiders can be so far off from “normal” circadian periods, and still be able to match their activity to the 24-hour light and dark cycle.

Determining the differences between short and normal period clocks in spiders may help researchers find out why and how different circadian clocks are suited to the particular environmental challenges of each species, Moore said.

SAN FRANCISCO — Blowflies don’t sweat, but they have raised cooling by drooling to a high art.

In hot times, sturdy, big-eyed Chrysomya megacephala flies repeatedly release — and then retract — a droplet of saliva, Denis Andrade reported January 4 at the annual meeting of the Society for Integrative and Comparative Biology. This process isn’t sweating. Blowfly droplets put the cooling power of evaporation to use in a different way, said Andrade, who studies ecology and evolution at the Universidade Estadual Paulista in Rio Claro, Brazil.
As saliva hangs on a fly’s mouthparts, the droplet starts to lose some of its heat to the air around it. When the fly droplet has cooled a bit, the fly then slurps it back in, Andrade and colleagues found. Micro-CT scanning showed the retracted droplet in the fly’s throatlike passage near the animal’s brain. The process eased temperatures in the fly’s body by about four degrees Celsius below ambient temps. That may be preventing dangerous overheating, he proposed. The same droplet seemed to be released, cooled, drawn back in and then released again several times in a row.

Andrade had never seen a report of this saliva droplet in-and-out before he and a colleague noticed it while observing blowfly temperatures for other reasons. But in 2012, Chloé Lahondère and a colleague described how Anopheles stephensi mosquitoes that exude a liquid droplet that dangles and cools, but at the other end of the animals.

Mosquitoes, which let their body temperatures float with that of their environment, can get a heat rush when drinking from warm-blooded mammals. While drinking, the insects release a blood-tinged urine droplet, which dissipates some of the heat. There’s some fluid movement within the droplet, says Lahondère, now at Virginia Tech in Blacksburg, but whether any of the liquid gets recaptured by the body the way fly drool is, she can’t say.