Surface salinity is increasing south of 50° latitude, stratification is weakening, and sea ice has reached multiple record lows, according to new research. [ + ]

While certain PFAS are harmful for human and public health, fluoropolymers are not considered environmental contaminants and are indispensable for use in medical devices. [ + ]

Nghtmares independently predict faster biological aging and earlier mortality — even after accounting for other health issues — according to new research. [ + ]

Australian scientists have developed lab-grown, three-dimensional heart tissues known as cardiac organoids that mimic the structure and function of real adult human heart muscle. [ + ]

Researchers claim to have found a safer and more sustainable approach to extract and recover gold from ore and electronic waste. [ + ]

New Zealand's Ngāi Tahu Research Centre has partnered with Colossal Biosciences and Sir Peter Jackson to resurrect the extinct South Island Giant Moa and other species. [ + ]

There are no approved human vaccines for either disease, nor are there any known cures — but with the discovery of the new nanobody, that could all be about to change. [ + ]

Researchers have identified a new brain protein involved in the development of Parkinson's disease and a way to modify it, paving the way for future treatments for the disease. [ + ]

A research team has used an epilepsy-like disease model in a laboratory dish to demonstrate that improved information processing and neural function can be achieved using a medication designed specifically to treat the disease. [ + ]

A heat-tuneable filter for infrared light, built on nanotechnology, promises handheld, robust technology to replace current desktop infrared spectroscopy set-ups that are bulky, heavy and expensive. [ + ]

What do the brains of newborns and patients with Alzheimer's disease have in common? Both have elevated blood levels of a protein called phosphorylated tau, specifically a form called p-tau217. [ + ]

The tool could allow important polymers — large, chainlike molecules with many modern applications — to be created in incredibly small spaces with a high level of precision. [ + ]

Cannabis users have a 29% higher risk of acute coronary syndrome, a 20% higher risk of stroke, and a doubled risk of dying from cardiovascular disease, according to new analysis. [ + ]

Living in zero gravity can lead to periodontitis — a serious condition where the gums become inflamed and the bone that supports teeth starts to break down, eventually leading to tooth loss. [ + ]

Researchers have developed a novel catalytic system for efficiently producing ammonia from abundant molecules found on Earth, including atmospheric nitrogen and water. [ + ]