The candidates are all but certain to clash over the issue, which Kamala Harris sees as a major strength. Donald Trump may try to avoid political blowback for his approach. Source link

You could say that this is exactly what Isaac Newton’s picture of gravity does—giving a relation between an object’s mass and the gravitational force it exerts. And you would be right. But the concept of space-time curvature gives rise to a much richer range of phenomena than a simple force. …

About two years ago, I was filling out an application to start volunteering at a children’s hospital in my city and was asked to provide my blood type. Luckily, I knew off the top of my head that I’m type O-positive, but I wanted to find documentation to confirm this …