Daily Science: Zinc Oxide
US releases 1940 census data after 72 years
US releases 1940 census data after 72 years, giving you a chance to see what your grandparents were up to After the required 72 year waiting period, the US Census released its census data from 1940 this past weekend. If you’re at all curious about what your grandparents, great aunts or uncles or parents were…
