In this issue, discover the topic of the 2025 Essay Contest and meet Lasker Laureate Barry Marshall, whose finding that Helicobacter pylori causes peptic ulcer disease changed the lives of millions within the span of a decade. Our Ask a Scientist video series will now feature a new interview every week.

essay contest

The 2025 Lasker Essay Contest Is Now Open!

Learn about this year’s topic, eligibility, prizes, and guidelines for submission.

Gut Feeling

Read about Lasker Laureate Barry Marshall, who discovered the cause of ulcers by taking matters into his own gut.

Ask a Scientist

We pose questions to researchers of all ages and career paths. Hear what they have to say. New videos every Wednesday!