Freshman Ian Smith, foreground, calls up a map of the MIT campus to show his family on Friday, Oct. 14. Family Weekend, which brings hundreds of families to campus each fall, was held Oct. 14-16. With Ian from left are his father, Steve, his mother, Gayle, and his brother, Brian, 12. The Smiths are from Elmhurst, N.Y.
Lydia Bourouiba’s research on fluid dynamics influenced new guidance from the World Health Organization that will shape how health agencies respond to respiratory infectious diseases.