Nabiha Saklayen: Could lasers make stem cell therapy available to everyone? Stem cells have long been heralded as a potential tool to treat illnesses. Nabiha Saklayen explains how it's still early, but scientists are getting closer to turning this vision into a reality. Manoush Zomorodi
Jennifer Doudna: What does CRISPR mean for the future of human evolution? In 2011, biochemist Jennifer Doudna helped discover the genetic editing tool CRISPR. Today CRISPR is actively deployed in clinical trials with the potential to cure disease—and alter human evolution. Manoush Zomorodi
Employers added only 199,000 jobs in December even before omicron started to surge U.S. employers added 199,000 jobs in December as the unemployment rate fell to 3.9%, marking a second consecutive month of disappointing numbers. Scott Horsley
What it really takes to keep schools open during the omicron surge Schools are just starting to get regular access to testing; teachers are still paying out of pocket for masks and air purifiers; and qualified substitutes and bus drivers can be hard to find. Anya Kamenetz
Experts say these changes could help the U.S. live with COVID The omicron wave in the U.S. will likely continue to the end of January, then start to recede rapidly. Former advisers to President Biden say a new strategy is needed to help the U.S. live with COVID. Allison Aubrey
What we know about the symptoms — and the severity — of the omicron variant Researchers are looking at data from U.S. cases to determine if the variant causes milder disease. Even if the answer is yes, they say, rates of hospitalization could be high during the surge. Michaeleen Doucleff
Unvaccinated National Guard members can't be deployed to hospitals that need help Ohio's hospitals have some of the nation's highest numbers of COVID patients. And with staffing levels suffering, nearly 2,000 Ohio National Guard personnel are being deployed to help. Karen Kasler
COVID is spiking in India, further straining the country's health system India's COVID-19 caseload is quickly rising, as omicron threatens the country's already precarious health system. Lauren Frayer
COVID testing FAQ: When to test, what kind of test to use and what your results mean We answer key questions about COVID tests: What types are there? Should you self-test right after exposure to someone with COVID? And what should you do if you test positive? Melody Schreiber
Isolation rule changes are the latest case of the CDC's problems with messaging The new CDC guidelines for COVID-19 isolation and quarantine have garnered a lot of criticism. And this is just one example of the agency's on going communication problems. Selena Simmons-Duffin