A 19th-century volume contained a mystery for two historians who combined their knowledge to tell the story of the women and their contributions to American democracy.
Forgetting is beneficial for the human brain. But the internet has made it harder to let go of painful or problematic memories.
A showdown with Iran over some oil tanker attacks in the Persian Gulf could push the US into its next Mideast war, writes a scholar of military aggression.
Hawaii's fight for statehood was long and waged primarily against racist US lawmakers who feared admitting a majority Asian territory. But 60 years ago, President Eisenhower signed the statehood bill.
Stories passed down from the ancient world tell of self-powered machines able to move on their own – robots – playing key roles in historic moments.
In some significant ways, Americans have fewer avenues for advancement than the characters of Mad Men do.