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A new study shows when preschoolers are exposed to even dim light in the hour before bedtime it can significantly lower levels of the sleep-promoting hormone melatonin, potentially disrupting sleep. The research serves as a reminder to parents to turn off electronics and dim the lights to promote healthy sleep in children.

A global study of 13,000 individuals found people around the world base their opinions of COVID-19 policies on who supports them, not what's in them. It suggests scientists and bipartisan coalitions, not political elites, should be the first ones to communicate pandemic plans.

A new, long-awaited study shows amputee sprinters using running prostheses, or blades, have no clear competitive advantage at the 400-meter distance compared to sprinters with biological legs. The research puts into question sports governing body policies that limit the height of prostheses.

New 精品SM在线影片 research suggests that in highly vaccinated regions, including Colorado, most infections will soon be breakthrough cases, and money spent on testing the unvaccinated could be better spent on other public health measures.

Two 精品SM在线影片 scientists discuss what鈥檚 different about omicron, why people are watching it closely and what can be done to prevent more variants of concern from emerging.

A new 精品SM在线影片 study shows that in the days following the 2020 presidential election, Republicans grew increasingly doubtful that the vote count was legitimate. Regardless of party, the more an individual trusted and consumed Fox News, the less faith they had in the electoral process.

A new first-of-its kind study aims to shed light on why so many people use cannabis before, during or after working out. It also seeks to answer a critical question: Does THC, which is considered a banned substance by the World Anti-doping Agency, hurt or help performance?

The machine-learning systems that help your phone recommend music, movies, news and more can be biased in ways that leave out artists from underrepresented groups or foster polarization. Professor Robin Burke is working to change that.

Fifty-five years after a Black postal worker produced the inaugural issue of 鈥淭he Green Book鈥� to help African Americans navigate a racist society, Black Twitter is playing a similar and even broader role, suggests a new 精品SM在线影片 study.

A new analysis of 350,000 news stories produced by conservative media giant Sinclair Broadcast Group finds when the company buys a station, local news definitely takes a hit. But it did not find any evidence, at scale, that coverage shifts toward a more conservative slant.