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159,645 articles from ScienceDaily

How cosmic winds transform galactic environments

Much like how wind plays a key role in life on Earth by sweeping seeds, pollen and more from one place to another, galactic winds -- high-powered streams of charged particles and gases -- can change the chemical make-up of the host galaxies they form in, simply by blowing in a specific direction.

Chemists design new molecule, with oxygen as the star of the show

Chemists have achieved a new feat in the realm of chemical design and synthesis: They've helped create the first example of a synthetic molecule, with an asymmetric oxygen atom as its centerpiece, that remains stable and nonreactive -- despite this type of molecule's tendency in nature to be touchy and short-lived. What makes this feat unique is that the new molecule is chiral, which means it has...


How whale shark rhodopsin evolved to see, in the deep blue sea

A group of researchers discovered that the rhodopsin -- a protein in the eye that detects light -- of whale sharks has changed to efficiently detect blue light, which penetrates deep-sea water easily. The amino acid substitutions -- one of which is counterintuitively associated with congenital stationary night blindness in humans -- aid in detecting the low levels of light in the deep-sea....


Shedding pounds may benefit your heart -- even if some weight is regained

Weight loss was associated with decreased risk factors for cardiovascular disease and Type 2 diabetes for at least five years -- even if some weight was regained, according to a review of research on behavioral weight loss programs. People who lost weight through an intensive behavioral weight loss program had lower systolic blood pressure levels, total cholesterol-to-good cholesterol ratio and...

The powerhouse of the future: Artificial cells

Researchers identify the most promising advancements and greatest challenges of artificial mitochondria and chloroplasts. The team describes the components required to construct synthetic mitochondria and chloroplasts and identifies proteins as the most important aspects for molecular rotary machinery, proton transport, and ATP production. The authors believe it is important to create artificial...

Molecular imaging offers insight into chemo-brain

A newly published literature review sheds light on how nuclear medicine brain imaging can help evaluate the biological changes that cause chemotherapy-related cognitive impairment (CRCI), commonly known as chemo-brain. Armed with this information, patients can understand better the changes in their cognitive status during and after treatment.

First silicon integrated ECRAM for a practical AI accelerator

The transformative changes brought by deep learning and artificial intelligence are accompanied by immense costs. For example, OpenAI's ChatGPT algorithm costs at least $100,000 every day to operate. This could be reduced with accelerators, or computer hardware designed to efficiently perform the specific operations of deep learning. However, such a device is only viable if it can be integrated...

Some coastal salt marshes are keeping up with sea level rise -- for now

The world's salty, tidal marshes are hotspots of carbon storage and productivity, building up sediments and plant material to stay above sea level. However, as sea level rises at an increasing rate, scientists debate whether it's possible for wetlands to win the race. New research reveals how salt marshes along the U.S. East Coast have responded to accelerating sea level rise by building elevation...

Advanced electrode to help remediation of stubborn new 'forever chemicals'

As new environmental regulations are rolling out to mitigate the industry-retired long-chain chemicals known as PFAS in drinking water, there are concerns regarding a new breed of 'forever chemicals' called short-chain PFAS. Research is now helping shift the focus to include mitigation of the chemicals -- which researchers say are just as persistent as, more mobile and harder to remove from the...

Nanophysics: The right twist

Stacked layers of ultrathin semiconductor materials feature phenomena that can be exploited for novel applications. Physicists have studied effects that emerge by giving two layers a slight twist.