Category: Uncategorized

Young researchers and students are competing in a disaster challenge at a natural hazards forum in the Australian city of Brisbane.

The government-funded organization Natural Hazards Research Australia has said more Australians “than ever before are exposed to the damage and destruction of floods, bushfires, cyclones, heatwaves and storms.”

It reported that Australia has experienced 28 disasters that have cost more than $630 million, and 16 of these have occurred since 2000.

Experts have said that research is essential to improve Australia’s readiness for natural calamities.

At the inaugural Natural Hazards Research Forum in Brisbane, young researchers have been asked to solve a key conundrum in preparing communities for floods, fires and storms; how can disaster authorities get potentially life-saving advice to the “unengaged, the moving,” such as tourists or “the hard to reach”?

The winning entry aims to reach international tourists through Wi-Fi — essentially captive portals that compel visitors in flood or fires zones, for example, to watch a survival video before they can log onto the Internet at hotels, cafes or other destinations.

Mark Owens from the Country Fire Authority, an emergency service in the Australians state of Victoria, told VOA that the videos would be tailored for various locations and seasons.

“Making sure the message we actually get to them will actually change their behavior but also get them to do that for the future again and again, and that is why the videos will be tailored and changed seasonally, or, you know, if there is a La Niña coming through again,” he said. “So, you know, it might then really focus on floods for a big period of time instead of bushfire.”

Parts of Victoria state are currently facing one of the biggest floods in decades.

There have been rescues and evacuations along the Maribyrnong River in the city of Melbourne.

Thousands of people are also under evacuation orders for flooding in the states of New South Wales and Tasmania.

Two climatic phenomena — La Niña and the Indian Ocean Dipole — are fueling the flooding. Both occur naturally and are influenced by warmer ocean temperatures. They are dumping above-average rainfall across much of Australia, and experts say they are being super-charged by climate change.

Sydney is having its wettest year on record. More than 2 meters of rain have fallen on Australia’s biggest city, breaking the previous record set in 1950.

Source: Voice of America

Jeff Bezos’ rocket company suffered its first launch failure Monday. No one was aboard, only science experiments.

The Blue Origin rocket veered off course over West Texas about a minute after liftoff. The capsule’s launch abort system immediately kicked in, lifting the craft off the top. Several minutes later, the capsule parachuted onto the remote desert floor.

Blue Origin’s launch commentary went silent when the capsule catapulted off the rocket, later announcing: “It appears we’ve experienced an anomaly with today’s flight. This wasn’t planned.”

The mishap occurred as the rocket was traveling nearly 700 mph (1,126 kph) at an altitude of about 28,000 feet (8,500 meters). There was no video shown of the rocket — only the capsule — after the failure occurred. The rocket usually lands upright on the desert floor and then is recycled for future flights; clearly, that did not happen this time.

Launch commentator Erika Wagner said the capsule managed to escape successfully, with the webcast showing it reaching a maximum altitude of more than 37,000 feet (11,300 meters). Thirty-six experiments were on board, half sponsored by NASA.

“Booster failure on today’s uncrewed flight. Escape system performed as designed,” the company tweeted later.

No further details were provided.

It was the 23rd flight for the New Shepard program, named after the first American in space, Mercury astronaut Alan Shepard. The same kind of rocket and capsule have been used to carry paying passengers on 10-minute rides to the edge of space. It was the ninth flight for this rocket.

Its most recent passenger flight was just last month. Bezos was on the first New Shepard crew last summer. Altogether, Blue Origin has carried 31 people to the edge of space. The company’s headquarters is in Kent, Washington.

Source: Voice Of America

Virtually all the contiguous United States experienced above normal temperatures in the past week, with more dangerously hot weather forecast.

The U.S. heat wave followed record heat that killed hundreds if not thousands of people and sparked wildfires in Europe.

Following is an explanation of what is causing the heat waves, according to scientists.

What is a heat wave?

A heat wave has no single scientific definition. Depending on the climate of a region, it can be determined by a certain number of days above a specific temperature or percentile of the norm.

Arctic warming and jet stream migration

The Arctic is warming three to four times faster than the globe as a whole, meaning there is ever less difference between northern temperatures and those closer to the equator.

That is resulting in swings in the North Atlantic jet stream, which in turn leads to extreme weather events like heat waves and floods, according to Jennifer Francis, senior scientist at the Woodwell Climate Research Center.

Heat domes

Warmer oceans contribute to heat domes, which trap heat over large geographical areas. This weekend the heat dome is stretching from the southern plains of the Oklahoma/Arkansas area all the way to the eastern seaboard, according to the U.S. Weather Prediction Center.

Scientists have found the main cause of heat domes is a strong change in ocean temperatures from west to east in the tropical Pacific Ocean during the preceding winter.

“As prevailing winds move the hot air east, the northern shifts of the jet stream trap the air and move it toward land, where it sinks, resulting in heat waves,” the U.S. National Oceanic and Atmospheric Administration says on its website.

El Niño and La Niña

Every few years, the climate patterns known as El Niño and, less frequently, La Niña occur. El Niño brings warm water from the equatorial Pacific Ocean up to the western coast of North America, and La Niña brings colder water.

At present, La Niña is in effect. Because summer temperatures trend lower during La Niña, climate scientists are concerned about what a serious heat wave would look like during the next El Niño, when even hotter summer weather could be expected.

Human-influenced climate change

Climate change caused by the burning of fossil fuels is a global phenomenon that is certainly playing a role in what the United States is experiencing, scientists say.

“Climate change is making extreme and unprecedented heat events both more intense and more common, pretty much universally throughout the world,” said Daniel Swain, climate scientist at UCLA.

“Heat waves are probably the most underestimated type of potential disaster because they routinely kill a lot of people. And we just don’t hear about it because it doesn’t kill them in, to put it bluntly, sufficiently dramatic ways. There aren’t bodies on the street.”

Francis, of the Woodwell Center, said with climate change the world is seeing changing wind patterns and weather systems “in ways that make these heat waves, like we’re seeing right now, more intense, more persistent, and cover areas that just aren’t used to having heat waves.”

Alex Ruane, researcher at NASA’s Goddard Institute for Space Studies, said as the world warms, “it takes less of a natural anomaly to push us into the extreme heat categories. Because we’re closer to those thresholds, it’s more likely that you’ll get more than one heat wave at the same time. We’re seeing this in the United States.”

Source: Voice of America

China on Sunday launched the second of three modules to its permanent space station, in one of the final missions needed to complete the orbiting outpost by year’s end.

A live feed on state broadcaster CCTV showed the 23-ton Wentian (“Quest for the Heavens”) laboratory module launching on the back of China’s most powerful rocket, the Long March 5B, at 2:22 p.m. (0622 GMT) from the Wenchang Space Launch Center on the southern island of Hainan.

Space agency staff, seen on the live feed observing the progress of the launch from a control room, cheered and applauded when the Wentian separated from the rocket about 10 minutes after the launch.

The launch was “a complete success”, CCTV reported shortly after.

China began constructing the space station in April 2021 with the launch of the Tianhe module, the main living quarters, in the first of 11 crewed and uncrewed missions in the undertaking.

The Wentian lab module, 17.9 meters long, will be where astronauts can carry out scientific experiments, along with the other lab module yet to be launched – Mengtian (“Dreaming of the Heavens”).

Wentian features an airlock cabin that is to be the main exit-entry point for extravehicular activities when the station is completed.

It will also serve as short-term living quarters for astronauts during crew rotations on the station, designed for long-term accommodation of just three astronauts.

Mengtian is expected to be launched in October and, like Wentian, is to dock with Tianhe, forming a T-shaped structure.

The completion of the structure, about a fifth of the International Space Station (ISS) by mass, is a source of pride among ordinary Chinese people and will cap President Xi Jinping’s 10 years as leader of China’s ruling Communist Party.

On board the space station are Shenzhou-14 mission commander Chen Dong and teammates Liu Yang and Cai Xuzhe. They are slated to return to Earth in December with the arrival of the Shenzhou-15 crew.

Source: Voice of America

World Health Organization Director-General Tedros Adhanom Ghebreyesus used his authority Saturday to declare Monkeypox a public health emergency of international concern. The action comes after an Emergency Committee convened to review the situation was unable to reach consensus.

When the Emergency Committee last met a month ago, more than 3,000 cases of monkeypox in 47 countries had been reported to the WHO. Since then, the outbreak has grown, with more than 16,000 cases reported in 75 countries. Five deaths from the disease also have been reported.

As happened the last time it met, the committee again was unable to reach consensus on whether monkeypox posed a global health threat. WHO chief Tedros Adhanom Ghebreyesus says he has evaluated the information under consideration and has determined there is a clear risk of further international spread of the disease.

“So, in short, we have an outbreak that has spread around the world rapidly, through new modes of transmission, about which we understand too little, and which meets the criteria in the International Health Regulations,” said Tedros. “For all of these reasons, I have decided that the global monkeypox outbreak represents a public health emergency of international concern.”

Tedros says the WHO believes monkeypox poses a moderate risk globally and in all regions, except in the European region, where it assesses the risk as high. Although there is a potential for further international spread, he says the danger of interference with international traffic remains low for now.

The monkeypox virus is spread from person to person through close bodily contact. For now, the outbreak is concentrated among men who have sex with men, especially those with multiple sexual partners.

Since the outbreak is largely contained in one group, Tedros says monkeypox can be stopped with the right strategies in the right groups.

“It is therefore essential that all countries work closely with communities of men who have sex with men, to design and deliver effective information and services, and to adopt measures that protect the health, human rights, and dignity of affected communities,” he said. “Stigma and discrimination can be as dangerous as any virus.”

Tedros says the necessary tools for tackling the outbreak are available. However, he adds the world must act together. It must act in coordination and solidarity to bring the monkeypox virus under control and prevent it from gaining a foothold in the countries where it is found.

Source: Voice of America

Two children have been diagnosed with monkeypox in the U.S., health officials said Friday.

One is a toddler in California and the other an infant who is not a U.S. resident but was tested while in Washington, D.C., according to the Centers for Disease Control and Prevention.

The children were described as being in good health and receiving treatment. How they caught the disease is being investigated, but officials think it was through household transmission.

Other details weren’t immediately disclosed.

Monkeypox is endemic in parts of Africa, but this year more than 15,000 cases have been reported in countries that historically don’t see the disease. In the U.S. and Europe, most infections have happened in men who have sex with men, though health officials have stressed that anyone can catch the virus.

In addition to the two pediatric cases, health officials said they were aware of at least eight women among the more than 2,800 U.S. cases reported so far.

While the virus has mostly been spreading among men who have sex with men, “I don’t think it’s surprising that we are occasionally going to see cases” outside that social network, the CDC’s Jennifer McQuiston told reporters Friday.

Officials have said the virus can spread through close personal contact, and via towels and bedding. That means it can happen in homes, likely through prolonged or intensive contact, said Dr. James Lawler, an infectious diseases specialist at the University of Nebraska Medical Center.

“People don’t crawl on each other’s beds unless they are living in the same house or family,” he said.

In Europe, there have been at least six monkeypox cases among kids 17 years old and younger.

This week, doctors in the Netherlands published a report of a boy who was seen at an Amsterdam hospital with about 20 red-brown bumps scattered across his body. It was monkeypox, and doctors said they could not determine how he got it.

In Africa, monkeypox infections in children have been more common, and doctors have noted higher proportions of severe cases and deaths in young children.

One reason may be that many older adults were vaccinated against smallpox as kids, likely giving them some protection against the related monkeypox virus, Lawler said.

Smallpox vaccinations were discontinued when the disease was eradicated about 40 years ago.

Source: Voice of America