Weinstein is an evolutionary biologist who co-hosts the DarkHorse podcast with his wife, biologist Heather Heying.

In 2017, his objection to changes to a "Day of Absence" event at Evergreen State College, where he was a professor, led to student protests; he and Heying later resigned after reaching a settlement with the college.

• He co-authored A Hunter-Gatherer's Guide to the 21st Century (2021) with Heying.

• He has been widely criticized by scientists and public health experts for promoting misinformation about COVID-19 vaccines and treatments.

• His brother is mathematician Eric Weinstein.