Understanding the Heart Model: Veins and Arteries Explained

human heart anatomy | 3D Animation | Biology with Aliya

Cardiac Catheterization

The Human Heart: A Visual Guide to Circulation

This is what saves 600,000 people every year during a heart attack. Your heart is running out of time. Every second an artery stays blocked, heart muscle dies — and open-heart surgery isn’t fast enough. That’s why doctors use a coronary stent. A catheter snakes through your wrist or groin to the exact site of the blockage. A balloon inflates, and a tiny metal mesh tube — smaller than your fingertip — locks the artery open permanently. Circulation restored. Heart muscle saved. Patient walking out

In this lesson, we’re talking all about GPA, Grade Point Average, and why the “highest GPA” can look different from school to school. Some schools use a traditional 4.0 scale, while others use weighted GPAs for honors, AP, IB, or advanced classes that can push students above a 4.0… sometimes even to a 5.0 or higher. Some students online are even claiming GPAs as high as 7.0. We also discuss academic honors like valedictorian and salutatorian, what those titles mean, and how schools rank students

What's the true cost of the AI revolution and who should be paying for it? We went to Georgia to find out. Demand for data centers is booming as ChatGPT and other AI tools become integrated into our daily life. Under the Trump administration, investments into data centers in the U.S. is expected to surpass $1 trillion in the next five years. But data centers put extraordinary demand on the power grid and require entirely new infrastructure. In the next three years, data center use of electricity