Twenty years after the first publication that used the term microplastic, we review current understanding, refine definitions, and consider future prospects. Microplastics arise from multiple sources, including tires, textiles, cosmetics, paint, and the fragmentation of larger items. They are widely distributed throughout the natural environment, with evidence of harm at multiple levels of biological organization. They are pervasive in food and drink and have been detected throughout the human body, with emerging evidence of negative effects. Environmental contamination could double by 2040, and wide-scale harm has been predicted. Public concern is increasing, and diverse measures to address microplastic pollution are being considered in international negotiations.
Pyrolysis gas chromatography–mass spectrometry reveals the presence of microplastics and nanoplastics in human kidney, liver and brain tissue samples from 2016 and 2024, with higher proportions found in the brain.
It’s about my paper.
Dissolving polymers with organic solvents is the essential process in the research and development of polymeric materials, including polymer synthesis, refining, painting, and coating. Now more than ever recycling plastic waste is a particularly imperative part of reducing carbon produced by the materials development processes.
Polymers, in this instance, refer to plastics and plastic-like materials that require certain solvents to be able to effectively dissolve and therefore become recyclable, though it’s not as easy as it sounds. Utilizing Mitsubishi Chemical Group’s (MCG) databank of quantum chemistry calculations, scientists developed a novel machine learning system for determining the miscibility of any given polymer with its solvent candidates, referred to as χ (chi) parameters.
This system has enabled scientists to overcome the limitations arising from a limited amount of experimental data on the polymer-solvent miscibility by integrating massive data produced from the computer experiments using high-throughput quantum chemistry calculations.
An elastocaloric cooling platform is constructed based on shape memory alloys with a cellular architecture that enables cooling powers above 1 kW.
Researchers at the Hong Kong University of Science and Technology (HKUST) have developed the world’s first kilowatt-scale elastocaloric cooling device. The device can stabilize indoor temperatures at a comfortable 21°C–22°C in just 15 minutes, even when outdoor temperatures reach between 30°C and 31°C, marking a significant breakthrough toward the commercial application of elastocaloric solid-state cooling technology.
The research findings have been published in the journal Nature, offering a promising solution to combat climate change and accelerate the low-carbon transformation of the global cooling industry.
As global warming intensifies, the demand for air conditioning and cooling has been growing, with cooling already accounting for 20% of global electricity consumption. Mainstream vapor compression cooling technology relies on refrigerants with high global warming potential (GWP).
An innovative prototype is assessing the potential of capturing energy from the formidable swells of the Southern Ocean.
Microwaves are usually used to interact with superconducting qubits, but optical photons can be processed at room temperature. The electro-optical transceiver presented here allows all-optical readout of a qubit without affecting its performance.
The AuREUS system is an evolution for walls/windows, and uses technology synthesized from upcycled crop waste to absorb stray UV light from sunlight and convert it to clean renewable electricity.
This is a bit old, but still cool.
Getting seven experiments on the International Space Station requires a really good idea. Like a brand new way to attack tumors—one that you can only make in space.
Space has unique advantages for making medicines. Its very low gravity makes it possible to grow molecules in shapes and uniformity that are difficult to create on Earth. If they can be reliably and affordably produced, such molecules could have all kinds of novel uses in industry and medicine.
University of Connecticut engineer Yupeng Chen has been growing one such unusually rod-shaped nanoparticle, called a Janus base nanotube, on the International Space Station (ISS). The success of Chen’s last five experiments has led to this latest $1.9 million award from the Center for Advancement of Science in Space and NASA’s Division of Biological and Physical Sciences. With it, Chen and his colleagues will use the space station’s unique environment to grow pharmaceuticals whose shape is their secret weapon.#
Experiments aboard the International Space Station may offer promising advancements in fighting cancer.
Below is an overview of a developing cancer treatment that relies on highly focused sound waves in a liquid medium (often the body’s own fluids) to non-invasively destroy tumors. Though the technology is still in various stages of research and clinical trials, it shows promise as a potential alternative or complement to surgery, radiation, or traditional chemotherapy.
1. What Is This Technology?
A primary example of a soundwave-based treatment that uses water or fluid in the body is called histotripsy (or, more broadly, high-intensity focused ultrasound—HIFU). Histotripsy is an emerging therapy that directs ultra-short, high-intensity ultrasound pulses at a targeted area, causing microscopic, rapid changes in tissue pressure.