If there is one design feature that has defined the last few years of the smartphone industry, it has to be the notch. As phone makers continue to work their way to a legitimate bezel-less display, ...

Medically reviewed by Nicholas R. Metrus, MD Key Takeaways Mosaic Down syndrome has some cells with three copies of chromosome 21, and some with two instead of all three.Only about 1% to 2% of people ...