Harvard’s intro to computer science was just updated! Here’s what’s new and how to earn a free certificate.

In Q4 2025, Duolingo announced it would let go of $50M in bookings to reach 100 million daily active users (DAUs) by 2028; a strategy Class Central covered in detail last month.  2026 is its “investment year,” and Q1 was the first quarter of execution. So far, the plan seems to be working. The Expected Results: Low Bookings, High DAUs Duolingo is running multiple tests to improve the free experience: spoken tokens for speaking practice, Speaking Adventures for real-world conversations, and fla

Build apps, automate workflows, and launch your app within days. Master low-code/no-code development with these beginner-friendly courses.

Be informed about climate change – its causes, mitigation, and adapting to a changing world. Here are the best climate change courses!