A new book chronicles the winter of 1933, when nations began to turn inward toward nationalism and isolationism and the world edged closer to war again.

For VE Day, a historian looks back on what we should remember and what we've forgotten about the day the Allies accepted Nazi Germany's surrender.

A nuclear war that cooled Earth down could be dire for the world's oceans, particularly in terms of worsening ocean acidification.

Archaeologists are illustrating parallels between the WWII era and today by finding and documenting objects left behind by modern-day refugees in Croatia.

A historian explains how war and politics almost overshadowed Albert Einstein's work and why Veterans Day should remind us of the threat of nationalism.

Though there's been a lot of research on PTSD and the toll of war, little research has focused on grief among veterans. A new study identifies seven themes.

Analyzing 8 million books and 65 million newspaper articles let researchers measure national happiness levels from 1820 - 2009 for the first time.

100 milion people could die immediately in a nuclear war between India and Pakistan, but that would just be the beginning.

What would happen if the US and Russia went to war with nuclear weapons? Well, first, the world would get very, very cold. And that's just the beginning.

Wildfires in British Columbia in 2017 caused the formation of a cloud so big that scientists say it will help them model the effects of a nuclear war.