US says Russia is violating key nuclear arms control agreement | CNN Politics

CNN  —  Russia is violating a key nuclear arms control agreement with the United States and continuing to refuse to allow inspections of its nuclear facilities, a State Department spokesperson said Tuesday. “Russia is not complying with its obligation under the New START Treaty to facilitate inspection activities on its…

How to make hydrogels more injectable

Gel-like materials that can be injected into the body hold great potential to heal injured tissues or manufacture entirely new tissues. Many researchers are working to develop these hydrogels for biomedical uses, but so far very few have made it into the clinic. To help guide in the development of…

More variability helps learning

The World Cup final is in full swing, the stadium is filled to capacity, the fans are roaring, there is a flurry of flashbulbs. A free kick taker gets ready, takes a run-up and shoots. He had practiced free kicks a thousand times beforehand, but only on his home training…

Understanding plants can boost wildland-fire modeling in uncertain future: Drought and warmer temperatures make vegetation dynamics crucial to fire behavior and effects

A new conceptual framework for incorporating the way plants use carbon and water, or plant dynamics, into fine-scale computer models of wildland fire provides a critical first step toward improved global fire forecasting. “Understanding the influences of vegetation structure and physiology on wildland fire is crucial to accurately predicting the…

New vaccine targets life-threatening fungal infections, a growing health concern: Fungal infections cause 1.5M+ deaths each year, and there’s no vaccine to prevent them

A new vaccine from the University of Georgia could be the first clinically approved immunization to protect against invasive fungal infections, a growing concern as antifungal drug resistance increases. Fungal infections cause more than 1.5 million deaths worldwide each year and cost billions. They also double hospitalization costs, double the…

‘Ghostly mirrors’ for high-power lasers

The ‘mirrors’ exist for only a fragment of time but could help to reduce the size of ultra-high power lasers, which currently occupy buildings the size of aircraft hangars, to university basement sizes. They have potential to be developed into a variety of plasma-based, high damage-threshold optical elements that could…

Migraine associated with increased risk for pregnancy complications

Women are disproportionately affected by migraine, especially during their reproductive years. However, the relationship between migraine and adverse pregnancy outcomes has not been well understood. A new study by investigators from Brigham and Women’s Hospital, a founding member of the Mass General Brigham healthcare system, analyzed data from thousands of…

Can a computer teach babies to count?

When Jinjing Jenny Wang embarked on a two-year study to determine whether infants experience any cognitive benefits from watching someone count out loud on screen instead of in person, she had already seen what affect such a video had on her own daughter at 10 months old. “I showed my…

Transforming the way cancer vaccines are designed and made: ‘Rational vaccinology’ increases potency by changing the structural location of antigens, adjuvants

A new way to significantly increase the potency of almost any vaccine has been developed by researchers from the International Institute for Nanotechnology (IIN) at Northwestern University. The scientists used chemistry and nanotechnology to change the structural location of adjuvants and antigens on and within a nanoscale vaccine, greatly increasing…

An illuminated water droplet creates an ‘optical atom’

Shining light on a water droplet creates effects analogous to what happens in an atom. This can help us understand how atoms work, write researchers from the University of Gothenburg in a new journal article. If you whisper by the wall in the dome of St Paul’s Cathedral in London,…

Moderate and intense physical activity favors good sleep: New study conducted in Japan emphasizes the importance of physical activity in improving sleep quality in middle-aged Japanese women

Proper sleep is critical for the maintenance of good health, and vice versa — a healthy lifestyle has been found to improve sleep quality. To better examine the relationship between physical activity and sleep, a team of researchers conducted a comprehensive study among middle-aged Japanese people. By outlining the factors…

Focused ultrasound technique leads to release of neurodegenerative disorders biomarkers

Several progressive neurodegenerative disorders, including Alzheimer’s disease, are defined by having tau proteins in the brain. Researchers are seeking to identify the mechanisms behind these tau proteins to develop treatments, however, their efforts to detect biomarkers in blood has been hampered by the protective blood-brain barrier. At Washington University in…

Selena Gomez responds to comments about her shaky hands | CNN

CNN  —  Selena Gomez is addressing comments by some of her social media followers about a recent video in which her hands were shaking. “The Only Murders In The Building” star had posted a video of her makeup and skincare routine on TikTok. “PSA I got most of these products…

Greece’s secret green ‘virgin island’

Editor’s Note — Sign up for Unlocking the World, CNN Travel’s weekly newsletter. Get news about destinations opening, inspiration for future adventures, plus the latest in aviation, food and drink, where to stay and other travel developments. (CNN) — The Greek island of Samothrace is a vision in green. The…