Viral Fossil Records: A Look into the Past! (and the Future?)

by Misha Guptafigures by Xiaomeng Han For close to two centuries, humans have been studying the biological past using fossil records. In recent history, we have added the ability to reconstruct the sequence of our DNA to our arsenal. Furthermore, phylogenetic trees (structures that define the evolutionary relationships in the line of descent from a common ancestor) have been created for all manners of organisms, … Continue reading Viral Fossil Records: A Look into the Past! (and the Future?)

How do COVID-19 vaccines work? Hear from a researcher who helped develop the Johnson & Johnson vaccine.

by Edward Chen The COVID-19 pandemic has catalyzed rapid technological advancements as scientists and engineers mobilize to combat its toll on human lives. Time is of the essence, and after rigorous testing for safety and effectiveness, there are now 3 vaccines with emergency approval in the United States that are all based on relatively new concepts. Two of the vaccines are based on messenger RNA … Continue reading How do COVID-19 vaccines work? Hear from a researcher who helped develop the Johnson & Johnson vaccine.

An Introduction to Ribosomes: Nature’s busiest molecular machines

by Francesca Tomasifigures by Jovana Andrejevic  Right now, the world is eagerly awaiting clinical trial data for two candidate COVID-19 vaccines known as mRNA vaccines. mRNA stands for “messenger RNA,” referring to the molecule that the vaccine delivers to our bodies. Once the vaccine enters our cells, the mRNA tells them exactly how to build a piece of the SARS-CoV-2 virus. The vaccine itself cannot … Continue reading An Introduction to Ribosomes: Nature’s busiest molecular machines