Regeneron Pharmaceuticals Inc. said initial data from an ongoing study of the company’s experimental antibody cocktail for use in hospitalized Covid-19 patients requiring low-flow oxygen show the therapy was sufficiently effective to warrant continuing the trial.

A roundup of some of the latest scientific studies on the novel coronavirus and efforts to find treatments and vaccines for Covid-19, the illness caused by the virus.

Scientists succeeded in reviving microbes retrieved from sediment deep under the seafloor in the heart of the South Pacific that had survived in a dormant state for 101.5 million years in research illustrating the resiliency of life on Earth.

A cheap and widely used steroid called dexamethasone has become the first drug shown to be able to save lives among COVID-19 patients in what scientists said is a “major breakthrough” in the coronavirus pandemic.

The U.S. National Institutes of Health (NIH) said data from the company’s trial of Gilead Sciences Inc.’s remdesivir show that the drug offers the most benefit for COVID-19 patients who need extra oxygen but do not require mechanical ventilation.