NewYorkTimes

New research suggests that stimulating neurons in the brain can address psychological issues with surprising speed and precision. View original article Contributor: Kim Tingley

During the pandemic, suicidal thinking is up. And families find that hospitals can’t handle adolescents in crisis. View original article Contributor: Benedict Carey

With new puppies and kids at home, doctors are worried about treating more children for dog bites. View original article Contributor: Perri Klass, M.D.

Two studies confirm that a new coronavirus mutant in California is more contagious, although the scale of its threat is unclear. View original article Contributor: Carl Zimmer

A half-million doses arrived this month in Afghanistan, where many insist the virus isn’t real and vaccines aren’t needed. Those who want the vaccine fear that only the well-connected will receive it. View original article Contributor: David Zucchino and Najim Rahim

The pandemic has highlighted the United States’ dependence on China for research animals, reviving calls for a “strategic monkey reserve.” View original article Contributor: Sui-Lee Wee and Bryan Tarnowski

A new study indicates that the condition might be less of a worry than once believed. View original article Contributor: Paula Span

In a single year, Covid-19 became a leading cause of death in the United States, rivaling heart disease and cancer, and has driven life expectancy down sharply. View original article Contributor: Lucy Tompkins, Mitch Smith, Julie Bosman and Bryan Pietsch

Two patients in a gene therapy study developed cancer years after treatment. It is not clear whether the therapy was responsible. View original article Contributor: Gina Kolata

The agency’s new guidance will speed the development of vaccines that protect against more contagious variants of the coronavirus. View original article Contributor: Noah Weiland, Katie Thomas and Carl Zimmer