Before the invention of modern science and technology, where many diverse foods can be grown in areas once considered inhospitable, the whims of nature determined what you ate, and if you ate at all. 

A recent study found that a virtual reality experience is able to reduce stress among COVID-19 frontline healthcare workers.

Galaxy clusters grow over time under gravity and, in the present-day universe, can contain hundreds or even thousands of galaxies, as well as hot gas and dark matter. As time goes by, their galaxies burn through the fuel available and evolve from vigorously star-forming galaxies into red and dead galaxies.

In the last few decades more has been learned about the impact of oral health on the entire human biological system. And more is being done to reduce factors that lead to an estimated 15 million babiesborn prematurely or preterm (defined as delivery before the 37th week of pregnancy) each year. Preterm babies are at greater risk of experiencing serious health problems.

Due to correlation between preterm births and poor oral care, researchers have looked at various ways to improve dental health during pregnancy, including “deep-teeth cleaning” like scaling and planing to remove plaque and tarter on the teeth and below the gum line, but that hasn't seemed to be very effective.

Our auditory system is able to detect sounds at an implicit level. The brain can distinguish between even very similar sounds, but we do not always recognize these differences. A new study demonstrated using sound perception during passive listening; when the subject is not trying to explicitly hear the differences.

The result was that the human brain unconsciously distinguishes between even very similar sound signals during passive listening.  

The ongoing SARS-CoV-2 pandemic and new mutations in viral genetic sequences have made "variant" part of the cultural lexicon, because they can have significant impacts on the virus’s transmissibility and the damage it causes. 

Researchers have long been concerned that could happen in the HIV-1 virus, which has been mitigated thanks to safer sex practices and modern science but still affects 38 million people worldwide.