What's up in
How to Design (or at Least Model) Mixed Dog Breeds
Readers simulated the genetics of dog breeding to solve a puzzle about mixed breed percentages and sexual reproduction.
Our Genes May Explain Severity of COVID-19 and Other Infections
Researchers are examining the power of subtle genetic weaknesses in the immune system to affect the severity of infectious diseases, including COVID-19.
The Tricky Math of Herd Immunity for COVID-19
Herd immunity differs from place to place, and many factors influence how it’s calculated.
Why South Asia’s COVID-19 Numbers Are So Low (For Now)
Many theories have been offered for why the official COVID-19 toll on the Indian subcontinent has been surprisingly low. The best explanation may be the shortage of good, timely data.
How to Breed a Pomsky and Other Questions About Dogs and Sex
Solve a puzzle about mixed dog breeds, sexual reproduction and the COVID-19 pandemic.
Sugary Camouflage on Coronavirus Offers Vaccine Clues
In the fight against viruses and other pathogens, scientists are looking beyond genes and proteins to the complex sugars, or glycans, on cell surfaces.
What Other Coronaviruses Tell Us About SARS-CoV-2
As COVID-19 cases continue to increase, our extensive knowledge of other coronaviruses informs our understanding.
The Animal Origins of Coronavirus and Flu
Zoonotic diseases like influenza and many coronaviruses start out in animals, but their biological machinery often enables them to jump to humans.
How to Permanently End Diseases
Smallpox was eradicated relatively quickly, but other diseases have proved harder to eliminate. The reasons are a mix of biology and psychology.