Researchers from California's Lawrence Livermore National Laboratory say they've figured out how to get their laser to squeeze hydrogen atoms together to make helium atoms, releasing energy in the process. It's an important step in the decades-long quest for fusion energy.
Rosa Finnegan in her nursing home. "As nice as this place is," she says, "there's an undercurrent — it's sad, also. I get up now in the morning and I'll say to myself, 'What am I gonna do all day now?' "
Caitrin Lynch for NPR