Cell Therapy Clinical Trials: Breaking Down the Science – Breakthrough T1D

I've been building a full turbulence course on YouTube and hit the point where the algebra gets unreadable without index notation. This video is a standalone introduction to the Einstein summation convention, free vs. dummy indices, and the Kronecker delta, using the Navier-Stokes equations as the worked example throughout. Even outside fluid mechanics, if you've…

Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent six days a week. By signing up, you confirm you are 16+, will receive newsletters and promotional content and agree to our Terms of Use and acknowledge the data practices in our Privacy Policy. You may unsubscribe at any time. Ancient Egyptians famously…

Hi everyone, We're a team of structural engineers and contractors working throughout Southern California. We put together a weekly collection of interesting structural findings we come across during assessments. The Imgur album contains the full photo set along with additional context for each image. https://imgur.com/gallery/things-seen-this-week-during-structural-assessments-oGuWCCD If you have questions about any of the photos shown,…

Extreme coastal flooding events are occurring far more frequently in our warming world than ever before, threatening countless communities that will only become more vulnerable as climate change intensifies. A recent study found that once-in-a-century flooding events now strike on our planet about once a decade. The study, published June 10 in the journal Nature…

Unaddressed implications of the FDA’s 2026 guidance on wellness devices

Voyager 1 has been on an incredible journey that’s defied all expectations. And it’s about to achieve yet another milestone. The small car-sized spacecraft was the first human-made object to enter interstellar space, and for almost 50 years it’s been hurtling away from Earth at 61,100 kilometers (38,000 miles) per hour. Crazily, in all that…