Lifeboat Foundation

A newly discovered pathway for formaldehyde oxidation could be an important general mechanism in tropospheric chemistry. In the new route, absorption of sunlight allows organic molecules to react with atmospheric oxygen in a reaction that had not previously been observed. According to the researchers behind the findings, many compounds in the atmosphere are likely to undergo this process, particularly at low altitudes.

‘We discovered a new way molecules in the atmosphere can react,’ says Scott Kable at the University of New South Wales in Australia. He explains that in this process – called photophysical oxidation (PPO) – a molecule absorbs sunlight and before it breaks into fragments, it reacts with atmospheric oxygen to produce free radicals. In the common photochemical oxidation (PCO) reaction, which has been known for several decades, the molecules are first split by sunlight and then the fragments react with oxygen. ‘Importantly, the free radical fragments formed in the first step of PCO can be measured separately in the atmosphere or a lab,’ points out Kable.

The team demonstrated the PPO mechanism using formaldehyde as a model system. Meredith Jordan from the University of Sydney mentions that many organic compounds released to the environment turn into formaldehyde on their way to being oxidised to carbon dioxide. ‘But most importantly for our research, the spectroscopy and photochemistry of this compound are very well understood,’ she says. ‘Without this detailed pre-existing knowledge, we wouldn’t have been able to find the evidence of PPO.’

Tesla, Inc. TSLA Cybertruck updates, especially from influencers and the company’s fanbase, have been coming in thick and fast. Future Fund Managing Partner Gary Black is an analyst who is upbeat about the prospects for the electric pickup truck.

What Happened: Cybertruck deliveries are likely to “far exceed” Wall Street estimates, said Black in a tweet. He noted that the current consensus delivery estimates for 2024 and 2025 are 91,000 units and 160,000 units, respectively.

Following the ramp-up, Tesla is planning for annual production of 375,000 units, the analyst said. The consensus estimates are at least 200,000 per year short, he added.

I’m excited to share my latest article with Aporia Magazine, where I’m writing a series of stories on transhumanism. My latest article, on AI and religion, is now out.

Written by Zoltan Istvan.

A consensus of 350 top AI experts believes that by 2060 engineers could create a superintelligence to rival the human mind. This machine intelligence might create complex symphonies, direct blockbuster movies and run market-beating companies. But would it be sophisticated enough to understand spirituality, practice a religion or commune with a higher power?

Continue reading “How will religions deal with an omnipotent AI?” »

NASA’s Perseverance rover has found a diverse menagerie of organic molecules in a Martian crater, a new study reports.

Organic compounds are molecules composed of carbon, and often include other elements such as hydrogen, oxygen, nitrogen, phosphorus and sulfur. Previously, scientists had detected several types of organic molecules of Martian origin — in meteorites blasted off Mars by cosmic impacts that landed on Earth, and in Gale Crater on the Red Planet, which NASA’s Curiosity rover has been exploring since 2012.

The Emerald Ash Borer Network says that once the beetles reach their adult stage, the metallic green bugs will eat up foliage on ash trees – their only food source. But it’s the larvae that eat up the inner bark of ash trees and prevent nutrients and water from circulating.

Once that happens, Littleton officials said the tree that’s been attacked becomes structurally unsound and will die within just a few years.

It’s believed that the insects were introduced to the U.S. from Asia after tagging along on solid wood packing material, the network said. They were first discovered in the U.S. near Detroit in 2002, and have since expanded to at least 35 states as well as at least five Canadian provinces. Ash trees will typically lose most of their canopy within two years of an infestation and die within three to four years, the National Invasive Species Information Center says.

CIPhotos/iStock.

Standard immunotherapy procedures also employ intravenous injections loaded with NK cells to treat cancer but several limitations with this approach prevent it from delivering satisfying results. For instance, many NK cells lose their viability during the therapy and often fail to target the tumors, according to the researchers.

A new study conducted by researchers at Washington University School of Medicine in St Louis has explored the composition of gut bacteria in individuals in the earliest stage of Alzheimer’s disease. The research, which is published in Science Translational Medicine, not only identifies potential indicators of heightened dementia risk, but also offers prospects for developing microbiome-altering preventive treatments to combat cognitive decline.

Longevity. Technology: Previously, science has noted differences in the gut microbiomes of individuals with symptomatic Alzheimer’s compared with their healthy counterparts. However, the current study delves deeper, focusing on the gut microbiomes of individuals in the crucial pre-symptomatic phase. During this phase, individuals accumulate amyloid beta and tau proteins in their brains without exhibiting neurodegeneration or cognitive decline, which can persist for over two decades. Earlier diagnosis would enable people to access support and resources, plan for the future and well as onboarding treatments that could slow the progression of the disease. An idea of future numbers of patients would also allow health care infrastructure to be better prepared.

The researchers evaluated participants who volunteered at the Charles F and Joanne Knight Alzheimer Disease Research Center at Washington University, specifically selecting cognitively normal individuals. These participants provided samples of stool, blood, and cerebrospinal fluid, recorded their dietary habits, and underwent PET and MRI brain scans.

The findings suggest that glucose-sensing neurons in the brain are important for whole body glucose regulation, including during diabetes.

TUESDAY, July 6, 2023 (HealthDay News) — The widely used immunotherapy drug nivolumab (Opdivo) is safer and more effective in treating adults and children with advanced Hodgkin lymphoma than the targeted therapy now used as standard care is, new clinical trial results show.

Nivolumab outperformed the drug brentuximab vedotin (Adcetris), extending progression-free survival by 94% at one year compared to 86%, said lead researcher Dr. Alex Herrera, a hematologist-oncologist at City of Hope in Duarte, Calif.

Nivolumab also produced significantly fewer side effects than brentuximab vedotin, which was the first novel therapy developed for Hodgkin lymphoma, Herrera said in a presentation Sunday at the American Society for Clinical Oncology (ASCO) annual meeting in Chicago.