WHY is nearsightedness so common in the modern world? In the early 1970s, 25 percent of Americans were nearsighted; three decades later, the rate had risen to 42 percent, and similar increases have occurred around the world.
1More
1More
The Science of Loneliness: How Isolation Can Kill You | New Republic - 0 views
1 - 3 of 3
Showing 20▼ items per page