COVID-19 antibodies may fade, but vaccine hopes have not

Recent studies seem to paint a grim picture of how long COVID-19 immunity lasts, finding evidence of viral antibody counts plummeting in COVID-19 patients a mere two months after an initial infection. Some have worried that these people are vulnerable…

Hummingbird-size dinosaur may actually be a lizard

Researchers initially thought this skull belonged to a bird-like dinosaur. Now, evidence suggests that it’s the head of a lizard. A fossil attributed to a teensy, feathered dinosaur may not be a dinosaur at all, but rather a … lizard,…

What happens when the ICU is full?

COVID-19 outbreaks are often followed by headlines saying that intensive care units (ICUs) have hit capacity. But what does it really mean for an ICU to be full? In normal times, ICUs typically run at roughly 70% to 80% capacity,…