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Sperm size varies dramatically among different animal species. But why is sperm size so variable when they share the same job -- to fertilize eggs? In a new article published in Nature Ecology and Evolution, researchers from Stockholm University show that animal sperm evolution become supercharged only when sperm swim inside females.

A child's enjoyment of school at six years old is linked to their GCSE results aged 16, according to new research from the University of Bristol, published in the journal Science of Learning.

Researchers at the Estonian Genome Centre at the University of Tartu described novel associations between genetics and autoimmune vitamin B12 deficiency in their recent publication in Nature Communications. Autoimmunity means that an individual's immune system is no longer able to recognize its tissues as 'self' and starts attacking healthy tissues and cells, leading to autoimmune disease.

Research has found that training stroke survivors to walk at a faster speed during recovery can help improve the brain function that enables people to walk and perform another task simultaneously, known as dual-task walking.

The researchers found that dissatisfaction with marriage is a predictor of CVAs and premature death as much as physical indexes, including smoking and a sedentary lifestyle.According to the findings, the risk is higher among relatively young men, aged 50 and under.

A new study highlights ways to use regional climate models rather than global climate models to better simulate tropical cyclones activity through the rest of the century.

A Finnish study indicates that neurosurgical treatment of benign brain tumors improves the quality of life of elderly people in good health and adds to their lifespan.

Scientists have used a compound made from a starch derivative and baking soda to help convert mechanical to electrical energy. The approach, developed by scientists at Daegu Gyeongbuk Institute of Technology (DGIST), with colleagues in Korea and India, is cost-effective and biocompatible, and can help charge low-energy electronics like calculators and watches. The details were published in the journal Advanced Functional Materials.

To tackle the challenge of global warming, scientists have been looking into green and sustainable methods of breaking down carbon dioxide in emissions and in the atmosphere. Now, a group of researchers from Nagoya Institute of Technology, Japan, have developed a novel, easy to synthesize composite compound that enables the efficient use of solar energy to reduce carbon dioxide, taking us one step closer to achieving a green economy.

Based on novel engineering technology, researchers have fabricated profragrance nanoparticles that precisely control fragrance release, both in aqueous solution and on wallpaper under indoor light. In addition, the method used supports the flash and scale-up preparation of profragrance nanoparticles for industrial applications, with high batch-to-batch reproducibility.

Researchers from the Qingdao Institute of Bioenergy and Bioprocess Technology have developed a way to rapidly determine exactly which microalgae -- out of the millions of variations -- can most readily convert carbon dioxide into valuable compounds that can be used for fuels, food and drugs.

Medical cannabis is particularly helpful at treating severe epilepsy and chemotherapy's pernicious side effects. However, the side effects of these treatments in kids is still an open question.

New lateral flow test Vigilant is cheaper, easier to use and as reliable as the current gold standard PCR test for diagnosing SARS-CoV-2 infection.

Ultrathin needles for probing plants could help keep crop health in check.

Catherine F. Sinclair, MD, has been appointed the next Editor-in-Chief of VideoEndocrinology™, published byMary Ann Liebert, Inc.

Laura Wasylenki of Northern Arizona University is co-author on a new paper in Nature Communications showing a direct link between global dispersion of nickel-rich aerosols, ocean chemistry changes and the end-Permian mass extinction event that took place 251 million years ago.

In a retrospective study believed to be one of the largest of its kind, researchers say they have successfully charted the health risks, growth patterns, and medical and surgical outcomes of 1,374 people with the most common form of dwarfism, called achondroplasia, seen over a 60-year period at four academic medical centers, including Johns Hopkins Medicine.

A team led by researchers at Newcastle University, UK, has successfully created a model of the cells found in the lungs that can be used to replicate how COVID-19 infects the airways.

Relationships are often undermined by everyday frustrations like work stress or financial anxiety, but how do couples handle a challenge as unprecedented as the COVID-19 pandemic? People who blamed their stress on the pandemic more than on their partner were happier in their relationship, a new study in Social Psychological and Personality Science reports.

Lesbian, gay and bisexual people who encounter homophobic attitudes experience increases in heart rate, blood pressure and stress hormones, potentially putting them at risk for multiple health problems, according to research published by the American Psychological Association.