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Preventing infection with an improved silver coating for medical devices

Science Daily - Mié, 27/04/2022 - 09:04
According to folklore, silver bullets kill werewolves, but in the real world, researchers want to harness this metal to fight another deadly foe: bacteria. Recently, scientists have tried to develop a silver coating for implantable medical devices to protect against infection, but they've had limited success. Scientists now describe a new, long-acting silver-ion releasing coating that, in rats, prevents bacteria from adhering to implants and then kills them.

Lignin-based jet fuel packs more power for less pollution

Science Daily - Mié, 27/04/2022 - 09:04
An experimental plant-based jet fuel could increase engine performance and efficiency, while dispensing with aromatics, the pollution-causing compounds added to conventional fuels, according to new research.

Disposable masks could be used to improve concrete

Science Daily - Mié, 27/04/2022 - 09:04
With the pervasive single-use masks during the pandemic now presenting an environmental problem, researchers have demonstrated the idea of incorporating old masks into a cement mixture to create stronger, more durable concrete.

Rocket Lab briefly caught a falling rocket with a helicopter

New Scientist - Mié, 27/04/2022 - 08:55
In a world first, Rocket Lab caught its Electron rocket as it fell from space, using a hook mounted on a helicopter, but then had to let it go

Rocket Lab is about to try catching a falling rocket with a helicopter

New Scientist - Mié, 27/04/2022 - 08:55
In a world first, Rocket Lab will attempt to catch its Electron rocket as it falls from space, using a hook mounted on a helicopter

Underwater volcano in Antarctica triggers 85,000 earthquakes

Live Science - Mié, 27/04/2022 - 08:39
The swarm of 85,000 earthquakes that struck Antarctica was the strongest seismic outburst ever recorded there.

Viking boat burial discovered in Norway may hold the remains of royal figures

Live Science - Mié, 27/04/2022 - 08:21
Archaeologists unexpectedly discovered a Viking boat burial deep underground in Norway.

Ancient temple dedicated to Zeus unearthed in Egypt

Live Science - Mié, 27/04/2022 - 08:19
Archaeologists in Egypt have found traces of an ancient temple where people worshiped the god Zeus-Kasios.

EU plan for cutting emissions from planes could end up increasing them

New Scientist - Mié, 27/04/2022 - 08:12
New legislation that would see planes forced to use "sustainable aviation fuel" might actually end up increasing emissions, depending on which fuels are included

Covid-19 news: Denmark is first country to pause vaccinations

New Scientist - Mié, 27/04/2022 - 07:26
A regular round-up of the latest coronavirus news, plus insight, features and interviews from New Scientist about the covid-19 pandemic

Growing younger: Radical insights into ageing could help us reverse it

New Scientist - Mié, 27/04/2022 - 07:00
New insight into how we age suggests it may be driven by a failure to switch off the forces that build our bodies. If true, it could lead to a deeper understanding of ageing – and the possibility of slowing it

Lemon water benefits: Are there any?

Live Science - Mié, 27/04/2022 - 03:49
Are there really any benefits to lemon water? We look at how the clinical evidence stacks up against anecdotal claims

NASA's Space Telecoms Network May Soon Be Outsourced

Slashdot - Science - Mié, 27/04/2022 - 02:00
vm shares a report from Space.com: SpaceX is among companies that might replace services of NASA's aging space telecoms constellation that has kept the International Space Station connected to Earth for decades. For years, NASA's Tracking and Data Relay Satellite (TDRS) constellation has served as the main link between the International Space Station and Earth, providing astronauts with constant connection to ground control as well as the ability to engage with the public and stay in touch with their loved ones. The American space agency, however, plans to retire the six aging satellites in the next decade and hand over their task to commercial companies. This month, the agency announced partnerships with six commercial satellite operators including SpaceX, U.K. company Inmarsat, American Viasat and Switzerland-based SES, to demonstrate how they could take care of NASA's space communication needs in the future. "We don't plan to launch any new TDRS satellites in the future," Eli Naffah, the manager of NASA's Commercial Services Project, who oversees the partnership with the commercial companies, told Space.com. "The plan is to allow the constellation to basically [reach the end of its life]. At some point later in this decade, we are going to have some diminished capability and the plan is for the [commercial companies] to come up with a different way of providing communication services to our missions." "Back in the 1980s, when we developed TDRS, there really wasn't an ability on the commercial side to be able to provide this service," Naffah said. "But since then, the industry has far outpaced NASA's investment in this area. There's a lot of infrastructure, both on the ground and in orbit that is capable of providing these types of services to a spacecraft. [...] Hopefully, we can achieve some cost efficiencies in buying commercial services, get out of the business of operating networks, and really put more focus on science and exploration." According to Naffah, NASA will invest $278 million into the project over the next five years, with the agency's industry partners contributing a total of about $1.5 billion.

Read more of this story at Slashdot.

Bats and bears use the same amount of energy per gram when hibernating

New Scientist - Mar, 26/04/2022 - 19:01
Larger animals usually need less energy by weight than smaller ones but an analysis that looked at nine species found this wasn't true during hibernation

More Than Half of Americans Have Been Infected With COVID-19 At Least Once, Says CDC

Slashdot - Science - Mar, 26/04/2022 - 17:02
The common perception that nearly everyone in America seemed to have acquired the Omicron variant last winter may not have been far from the truth. By February 2022, nearly 60 percent of the population had been infected with the coronavirus, almost double the proportion seen in December 2021, according to data released on Tuesday by the Centers for Disease Control and Prevention. The New York Times reports: "By February 2022, evidence of previous Covid-19 infections substantially increased among every age group," Dr. Kristie Clarke, the agency researcher who led the study, said at a news briefing. Infections rose most sharply during the Omicron surge among children and adolescents, perhaps because many people in those age groups were still unvaccinated. The increase was smallest among adults 65 or older, who have the highest rate of vaccination and may be the most likely to take precautions. The new research suggests that three out of four children and adolescents in the United States had been infected with the coronavirus by February 2022, compared with one-third of older adults. While some studies suggest that prior infection offers a weaker shield against the virus than vaccines do, the resulting antibodies should provide a reasonable degree of protection against severe illness, at least in the short term. "We still do not know how long infection-induced immunity will last," Dr. Clarke said. The gains in population-wide immunity may explain why the new surge that is roaring through China and many countries in Europe has been muted in the United States so far. The findings may offer some comfort to parents who have been waiting anxiously for a vaccine to be approved for the youngest children. Many of those children now seem to have acquired at least some immunity. Even so, Dr. Clarke urged parents to immunize children who qualify as soon as regulators approve a vaccine for them, regardless of any prior infection.

Read more of this story at Slashdot.

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