Earth
While counties in populous metropolitan Atlanta had the highest number of COVID-19 cases in the initial weeks following Georgia's first reported case, it was rural Southwest Georgia counties, with a higher number of black residents and lower number of ICU beds, experiencing the highest rates of infection and death per capita, investigators report.
The latest issue of the journal Public Policy & Aging Report (PP&AR) from The Gerontological Society of America shows how aging is reshaping politics today in unprecedented ways, and how it will continue to do so for years to come.
Titled "Building Momentum for a New Future in Politics and Aging," the journal highlights existing studies as well as recommended areas for further research.
New Research: Mountain Meadow Restoration Can Bring Birds Back
In a new study led by scientists at Point Blue Conservation Science and in collaboration with The Institute for Bird Populations, authors evaluated the successes of mountain meadow restorations by analyzing eight years of bird data collected by field biologists. The authors concluded that, when "pond and plug" and similar techniques were followed, the number of birds of many species increased over time as habitat conditions improved.
NASA's Terra satellite provided a night-time look at what is now Post-Tropical Storm Dolly in the Northern Atlantic Ocean. Terra found that all of Dolly's clouds were on one side of the storm as the storm weakened further.
The team of Professor Tobias Bollenbach from the Institute for Biological Physics at the University of Cologne has published a study on a new approach to improving the effectiveness of antibiotics in bacterial infections. The study 'Highly parallel lab evolution reveals that epistasis can curb the evolution of antibiotic resistance,' on ways to controlling antibiotic resistance through targeted gene interactions has appeared in 'Nature Communications'.
Barn swallows live almost everywhere on the planet, recognizable by their forked tail and agility in the air. Yet while they share these characteristics, these little birds often look slightly different in each place they live--with some so distinct they're splitting off to become new species.
CORVALLIS, Ore. - Fish exposed to very low levels of chemicals commonly found in waterways can pass the impacts on to future generations that were never directly exposed to the chemicals, according to Oregon State University researchers.
"What that gets at is something your grandparents may have come into contact with in their environment can still be affecting the overall structure of your DNA in your life today," said Kaley Major, a postdoctoral scholar at Oregon State and lead author of the paper published today in the journal Frontiers in Marine Science.
Because of how aggressively they divide, cancer cells have an increased demand for building materials and energy. They meet these added demands by altering their metabolism -- taking in larger amounts of fuel, for example.
Historically, these metabolic changes have been considered a consequence rather than a cause of cancer, and therefore not good drug targets. However, a new study from the Sloan Kettering Institute laboratory of Hans-Guido Wendel challenges that assumption.
Scientists at Uppsala University have discovered a hitherto unknown function of blood platelets in cancer. In mouse models, these platelets have proved to help preserve the vascular barrier which makes blood-vessel walls selectively impermeable, thereby reducing the spread of tumour cells to other parts of the body. The study is published in the journal Cancer Research.
A new study by researchers at the RIKEN Center for Integrative Medical Science in Japan reports differences in blood cell mutations between Japanese and European populations. The study found that these pre-clinical mutations were strongly associated with different types of cancers and can explain why Europeans have higher rates of chronic lymphocytic leukemia, while Japanese have higher rates of T-cell leukemia. This study was published in Nature on June 24.
Yale researchers have discovered a "jamming signal" that blocks a powerful immune system stimulant called interleukin-18 (IL-18) from reaching tumors, including in cancers that are resistant to conventional immunotherapy treatments, they report June 24 in the journal Nature.
The research team created a version of IL-18 that could not be jammed and significantly reduced tumors in mice that are resistant to current immunotherapy.
Targeted cancer drugs work by striking a tight bond between cancer cell and specific molecular targets that are involved in the growth and spread of cancer. Detailed images of such chemical bonding sites or pathways can provide key information necessary for maximizing the efficacy of oncogene treatments. However, atomic movements in a molecule have never been captured in the middle of the action, not even for an extremely simple molecule such as a triatomic molecule, made of only three atoms.
Fresh insights into why some harmful substances are so efficient at causing cancer could aid the quest for better treatments.
New research reveals how chemicals can cause changes in cells to help them dodge the body's immune system and build resistance to cancer drugs.
Scientists tracked the impact of a toxic substance - similar to compounds found in tobacco, exhaust and some plants - to better understand how chemicals cause mutations in our cells' DNA.
Two new genera and four new species of giant, single-celled xenophyophores (protozoans belonging to a group called the foraminifera) were discovered in the deep Pacific Ocean during a joint project between scientists at the National Oceanography Centre, UK (NOC), the University of Hawai'i, and the University of Geneva. 'Moana' has inspired the name Moanammina for one of the new genera, while the second has been named Abyssalia in recognition of its abyssal habitat.
DNA, or deoxyribonucleic acid, carries genetic information in the chromosomes of cell nuclei and in mitochondria. DNA is a double helix composed of two long, coiled strands of polynucleotide chains. The chains are composed of four different deoxyribonucleosides attached to each other through phosphate bonds: deoxyadenosine (dA), deoxythymidine (dT), deoxycytidine (dC) and deoxyguanosine (dG).