The data bank, managed by the National Institutes of Health (NIH)/National Library of Medicine, requires trial sponsors to register applicable clinical trials within 21 days after the first human subject is enrolled and submit certain summary results information for those trials, generally no later than one year after the study’s completion date unless a deadline extension is obtained.
Artwork is one of the newest purchasable commodities on the crypto market, thanks to a new technology known as non-fungible tokens (NFTs). NPR informs us that an NFT is a crypto token that isn't interchangeable but is tied to a specific commodity. The easiest way to think about them is an analog to how they're being used. For the first time in its history, blockchains can be used to hold and trade collectibles. Yet, the trade of these collectible tokens brings with it some alarming environmental concerns.

Tons of Power Consumption

The Six Foot Rule is only a rule in a 'rule of thumb' way; it's okay for an estimate but you use a real ruler to build a house. 

Analyses instead show that the most important things are a mix of masks and ventilation. What about outdoors where ventilation is terrific? The Centers for Disease Control and Prevention  has now relaxed its guidelines and are in line with what the science says; namely that unless you're in a protest unmasked, you'll be fine. And the Biden administration wants to use that to promote vaccines as well.
About 23,000,000 years ago, something hit the giant Asteroid 4 Vesta(1) some 120,000,000 miles away and the impact sent huge rocks into space. In 2018, one such meteorite from that time hit Botswana.

It was not unique. Over 30 percent of such Howardite-Eucrite-Diogenites (HED) meteorites that hit Earth year come from just the impact that formed the Antonia crater on Vesta. And then there is everything else happening outside our atmosphere piling on.
Thanks to cosmic rays that created radioactive isotopes while it was in space, an asteroid on an impact trajectory with Earth On June 2, 2018 was detected before it arrived. 

Thanks to the isotopes in those fragments, researchers determined that 2018 LA, called such by the University of Arizona's Catalina Sky Survey as part of NASA's Planetary Defense program, was a solid rock about 1.5 m in size, which reflected about 25 percent of sunlight.

Eight hours later, a video camera in South Africa recorded a bright fireball over Botswana and the hunt was on for surviving meteorites deep inside the Central Kalahari Game Reserve. The first meteorite they found 18 grams and about 3 cm in size.
Antibiotics won't help with COVID-19 because the disease is not caused by bacteria but instead a virus. However, a new study finds that some antibiotics can prevent the entry of the SARS-CoV-2 virus into cells. The Drug Design and Molecular Topology Unit group of the University of Valencia found that certain macrolide antibiotics like clarithromycin and azithromycin (used in respiratory tract infections) does just that.
There were a lot of rules introduced during the COVID-19 pandemic that originated during late 2019 in Wuhan, China. Some were pretty Draconian. China welded the homes of people shut and destroyed 16,000 coronavirus samples at the world's largest coronavirus lab nearby.  Some were pointless, like everyone carrying Clorox wipes around.  Most were less intrusive and at least somewhat helpful; wear a mask, stay six feet apart.
As a child, you probably thought a week took forever and parents certainly thought days crept by after having an infant.

"Time flies when you are having fun" and COVID-19 quarantines and lockdowns were not fun.

A new study also finds what psychologists warned about; the effects on those with depression issues could be even worse. Unlike a new job or moving to a new place, where time also 'seems' to slow down, the new paper found that distortions to the passage of time were also present later into the global pandemic.
On April 24th, 1990, the Hubble Space Telescope was launched, and though it had bumpy childhood once the problems were fixed it has well exceeded its mission expectancy. A good thing too. The James Webb Space Telescope that was supposed to replace it 13 years and billions of dollars ago still hasn't launched, and when it eventually does, if things don't work, no space shuttle can reach it.
The Red Sea is about 1000 miles long and at most just over 170 miles wide. The Greeks called it a sea but they also called the Persian Gulf a sea.

It may instead be an ocean, because an ocean basin exists between Africa and the Arabian Peninsula. The Greeks did not know that and the problem in knowing now is that the oceanic crust along the narrow, north-south aligned rift is widely buried under a thick blanket of salt and sediments, which complicates direct investigations.