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Portside aims to provide material of interest to people on the left that will help them to interpret the world and to change it.

This Week in People’s History, Mar 25–31, 2026

Portside
Drawing by John Sloan of a wealthy businessman and a skeleton shaking hands over the corpse of a garment worker killed by the Triangle Shirtwaist Factory Fire Never Forget the Triangle Shirtwaist Factory Fire! (1911), Vietnam War Opposed Worldwide (1966), Andrew Johnson Puts His Racism on Display (1866), Lieutenant Calley Gets His Wrist Slapped (1971), Centuries of Caring for the Poor and the Sick (1736)

New Model Predicts How Mosquitoes Will Fly

Jennifer Chu MIT News
Their flight patterns change in response to different sensory cues, a new study finds. The work could lead to more effective traps and mosquito control strategies.

Colombia’s Left Has a Strong Showing in the Legislative Elections

Cruz Bonlarron Martínez NACLA
Congressional results show that Colombia's left-wing Pacto Histórico gained ground. Looking at the upcoming presidential election, the signs are trending positive. A victory would help show that the U.S regional grip is more fragile than it seems,

Sunday Science: The Disease That Looks Different Every Time

Aimee Pugh Bernard, PhD, Leigh Baxt, PhD, Christy Kestner, PhD, Elana Pearl BenJoseph, MD, MPH, Jess Steier, DRPH Unbiased Science
A deep dive into multiple sclerosis — what causes it, how it’s diagnosed, and where treatment is headed

Who Bankrolled the American Revolution?

Adam Gopnik The New Yorker
Our history too often sidesteps the question of finances. But sonorous ideals don’t keep an army supplied with uniforms, guns, and grub.
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