The rings of Saturn grant it a majesty befitting a planet named after the king of the Titans. Made almost completely of bits and chunks of ice and spanning thousands of miles wide, Saturn’s rings are its most spellbinding feature; they have mesmerized humans ever since Galileo discovered them with a telescope in 1610.
Recurrent fevers, persistent constipation or diarrhea, intense bouts of fatigue, debilitating brain fog and vivid hallucinations — some people who catch COVID-19 experience symptoms like these for months on end, and we’re still learning why that is.
People who wear eyeglasses may be at lower risk for catching COVID-19 than those who don’t wear glasses, early research from China suggests.
The study researchers analyzed information from 276 patients at a hospital in China’s Hubei province and found that only about 6% said they wore glasses for more than 8 hours a day, all of whom had myopia, or nearsightedness. That’s much lower than the estimated rate of myopia in Hubei from previous research, which was 31.5%.
Under a microscope, human sperm seem to swim like wiggling eels, tails gyrating to and fro as they seek an egg to fertilize.
But now, new 3D microscopy and high-speed video reveal that sperm don’t swim in this simple, symmetrical motion at all. Instead, they move with a rollicking spin that compensates for the fact that their tails actually beat only to one side.
As the novel coronavirus continues to infect people around the world, news articles and social media posts about the outbreak continue to spread online. Unfortunately, this relentless flood of information can make it difficult to separate fact from fiction — and during a viral outbreak, rumors and misinformation can be dangerous.
Around 1 in 5 people across the world have underlying conditions that put them at risk of developing severe COVID-19 if infected with the coronavirus, according to a new study. That adds up to around 1.7 billion people worldwide.
As coronavirus spreads across the globe, a crucial question has emerged: After recovering from an infection, are people immune?