Reporter

Johnson joined the Health team as a science writer in 2008. She also has covered telecommunications and tech culture for the Business section. Johnson was a physics and English major at Amherst College and earned her master’s degree in science writing from MIT.
A soft-spoken, virtually unknown mathematician from the University of New Hampshire has found himself overnight a minor celebrity, flooded with requests to give talks at top universities as his work is debated and celebrated online by leaders in his field.
A Brigham and Women’s Hospital doctor argues that the sleep deficiencies have been seriously exacerbated by artificial light, especially LEDs.
A Swiss entrepreneur has given Harvard $125 million for the second time in five years, to support a multidisciplinary bioengineering research institute that bears his name.
The school plans to close a long-running nuclear fusion project, one of only three in the nation, because of cuts in federal funding.