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50 articles from ScienceDaily

Novel quantum effect discovered in naturally occurring graphene

Under special circumstances, the electrical resistance of a material can adopt a fixed value that is independent from the basic material properties and 'quantized'. This 'quantization' normally occurs within strong magnetic fields at very low temperatures when electrons move in two-dimensions. Now, a research team has succeeded in demonstrating this effect at low temperatures in the almost...

Getting up to speed on the proton

A century ago, scientists first detected the proton in the atomic nucleus. Yet, much about its contents remains a mystery. Scientists report a new theory for understanding what's inside protons moving at the speed of light.

Record-breaking Texas drought more severe than previously thought

In 2011, Texas experienced one of its worst droughts ever. The dry, parched conditions caused over $7 billion in crop and livestock losses, sparked wildfires, pushed power grids to the limit, and reduced reservoirs to dangerously low levels. And according to a recent study led by geoscientists, the drought was worse than previously thought.

Massage doesn’t just make muscles feel better, it makes them heal faster and stronger

Massages feel good, but do they actually speed muscle recovery? Turns out, they do. Scientists applied precise, repeated forces to injured mouse leg muscles and found that they recovered stronger and faster than untreated muscles, likely because the compression squeezed inflammation-causing cells out of the muscle tissue. This work offers a non-invasive, drug-free treatment that can help...

Dwarf planet Vesta a window to the early solar system

The dwarf planet Vesta is helping scientists better understand the earliest era in the formation of our solar system. Two recent articles use data from meteorites derived from Vesta to resolve the 'missing mantle problem' and push back our knowledge of the solar system to just a couple of million years after it began to form.

Extinction and origination patterns change after mass extinctions

A sweeping analysis of marine fossils from most of the past half-billion years shows the usual rules of body size evolution change during mass extinctions and their recoveries. The discovery is an early step toward predicting how evolution will play out on the other side of the current extinction crisis.

A study of skull growth and tooth emergence reveals that timing is everything

Paleoanthropologists have wondered how and why humans evolved molars that emerge into the mouth at specific ages and why those ages are so delayed compared to living apes. It is the coordination between facial growth and the mechanics of the chewing muscles that determines not just where but when adult molars emerge. This results in molars coming in only when enough of a 'mechanically safe' space...

Tiny bubbles can be future treatment for inflammation

Scientists hope that tiny sacs of material excreted by cells -- so-called extracellular vesicles -- can be used to deliver drugs inside the body. Researchers now show that these nano-bubbles can transport protein drugs that reduce inflammation caused by different diseases. The technique shows promising results in animal models.

Protecting the ozone layer is delivering vast health benefits

An international agreement to protect the ozone layer is expected to prevent 443 million cases of skin cancer and 63 million cataract cases for people born in the United States through the end of this century, according to new research. The research team developed a computer modeling approach that revealed the effect of the Montreal Protocol and subsequent amendments on stratospheric ozone, the...

Sense of purpose associated with better memory

A new study showed a link between an individual's sense of purpose and their ability to recall vivid details. The researchers found that while both a sense of purpose and cognitive function made memories easier to recall, only a sense of purpose bestowed the benefits of vividness and coherence.

Think a census of humans is hard? Try counting their brain cells!

In 2013, the U.S. government began investing $100 million to decipher human brain anatomy in a large collaborative project called the BRAIN Initiative. Researchers built tools and set standards for describing all the cells in the brain. On October 7, 2021 the initiative reached a major milestone, publishing a comprehensive census of cell types in the mouse, monkey, and human primary motor cortex.