Like the patient Paul, a male black bear (Ursus americanus) named Nugget would rather hang back alone than jump right into the salmon fest. For his solo tendencies, the team at Tongass National Forest in southeastern Alaska have awarded Nugget the 2026 Introvert Award. “For much of the season, Nugget could be seen wedged between
A wave of epigenetic therapies is offering hope as ways to cure chronic hepatitis B — a lingering liver infection that is caused by the hepatitis B virus (HBV) and affects more than 250 million people around the world. Currently available drugs often fail to eradicate the virus from the body. Gene-editing therapies — which
A needle approaches an egg (purple) during in vitro fertilization, which some clinics offer in combination with a procedure called mitochondrial replacement therapy. Credit: Zephyr/Scientific Photo Library A small number of fertility clinics around the world are offering a controversial treatment: a procedure to provide clients’ embryos with donated mitochondria as a way to increase
