Is Dark Matter Just Black Holes Made During the Big Bang?

Is Dark Matter Just Black Holes Made During the Big Bang?

Illustration: Samuel Velasco/Quanta Magazine, Virgo/Frank Elavsky, Aaron Geller/NorthwesternAlas, the flirtation with primordial black holes soured in 2017, after a paper by Yacine Ali-Haïmoud, an astrophysicist at New York University who had previously been on the optimistic Kamionkowski team, examined how this type of black hole should affect LIGO’s detection rate.

The US Is Disastrously Behind in Coronavirus Testing. Again

The US Is Disastrously Behind in Coronavirus Testing. Again

According to a new nationwide survey, conducted by a consortium of researchers at Rutgers, Northeastern, Northwestern, and Harvard universities, most people are not getting results within the 24- to 48-hour window recommended by public health experts to aid effective contact tracing.

For Women Job Seekers, Networking Like a Man Isn't Enough

For Women Job Seekers, Networking Like a Man Isn't Enough

“Quite frankly, most of the jobs are still male-dominated and therefore the kind of private information that's so important to help women get ahead isn't as important to men's advancement,” says Northwestern University data scientist Brian Uzzi, the lead author on the study.

Last glacier standing in Venezuela – Climate Change: Vital Signs of the Planet

Last glacier standing in Venezuela – Climate Change: Vital Signs of the Planet

NASA Earth Observatory images by Joshua Stevens, using Landsat data from the U.S. Geological Survey and topographic data from the Shuttle Radar Topography Mission (SRTM). In 1910, glaciers spanned an area of at least 10 square kilometers (4 square miles) in the mountainous region of northwestern Venezuela.