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A conceptual schematic of a laser-based method for identifying the coronavirus quickly. Penn State University

Lasers could speed up coronavirus diagnostics

A team of physicists, virologists and computer scientists are seeking to develop a coronavirus diagnostic tool that could deliver rapid results.
Rapid blood tests for coronavirus could fill a large gap in knowledge. Taechit Taechamanodom/Moment via Getty Images

Coronavirus tests are pretty accurate, but far from perfect

Expanding coronavirus testing is one of the most important tasks public health officials are tackling right now. But questions over accuracy of the two main types of tests have rightly caused concern.
The relationship between the coronavirus and human genetics is murky. fatido/E+ via Getty Images

Your genes could determine whether the coronavirus puts you in the hospital – and we’re starting to unravel which ones matter

Researchers from Oregon Health and Science University found that variations in genes that code for parts of the cellular alarm system might play a role in how well people fight off COVID-19.
Exercise has many benefits, including boosting defenses against complications that occur during SARS-CoV-2 infections. Julien McRoberts / Getty Images

Exercise may help reduce risk of deadly COVID-19 complication: ARDS

The health benefits of exercise for our mind and body are well documented. But did you know that exercise could lower the risks of the most dangerous COVID-19 complication?
It would be fun to be able to shrink people and objects, but it’s something we can only imagine. Jasmin Merdan/Moment via Getty Images

Will scientists ever be able to shrink and grow stuff?

The movies make it seem like someday we’ll be able to make people and objects grow really big or shrink really small. Whether this will be possible comes down to the smallest of things.
Apps that warn about close contact with COVID-19 cases are key to relaxing social distancing rules. Walter Bibikow/Stone via Getty Images

How Apple and Google will let your phone warn you if you’ve been exposed to the coronavirus

Bluetooth wireless communication makes it possible to track when people have been exposed to people infected with the coronavirus. The right cryptography scheme keeps alerts about exposures private.
No one knows what kicked off the Big Bang that eventually allowed the stars to begin forming. Adolf Schaller for STScI

How could an explosive Big Bang be the birth of our universe?

The term ‘Big Bang’ might make you think of a massive explosion. Put the thought out of your head. Rather than an explosion, it was the start of everything in the universe.
For centuries, indigenous history has been largely told through a European lens. John White, circa 1585-1593, © The Trustees of the British Museum

Archaeologists have a lot of dates wrong for North American indigenous history – but we’re using new techniques to get it right

Modern dating techniques are providing new time frames for indigenous settlements in Northeast North America, free from the Eurocentric bias that previously led to incorrect assumptions.