Until 1939, World War I was known as “the war to end all wars”, but when Nazi Germany capped its mounting aggression against its neighbors by invading Poland, Europe was plunged into a second global conflict. It threatened the entire continent as well as the far-flung colonial possessions claimed by the French, the British, and the Dutch. German triumphs saw nation after nation fall, until only Great Britain remained defiant against Hitler’s dreams of conquest.

The first female Doctor of the Church, Teresa of Ávila, was a visionary who took matters of reform into her own hands. Even when the church authorities came against her, she stood her ground and held fast to her convictions. In so doing, she managed to persuade the Catholic powers to come around to her point of view. Teresa was not someone who took “no” for an answer; she charted her own course in life.

During the bitter winter of 1692/93, a group of young Puritan women in the colonial town of Salem, Massachusetts, accused more than 200 of their neighbors and fellow townspeople of using witchcraft to injure and torment them. This was an incredibly serious allegation that led to sensational court proceedings and ended with the execution of 19 people.

World War I, or the Great War, was believed to be "the war to end all wars". Because of the incredible extent of destruction and the staggering number of wounded and dead, even those who lived through it could scarcely comprehend its horror. Beginning in 1914, alliances between powerful nations soon plunged the world into a global conflict. Fighting - including miserable trench warfare - broke out in practically every corner of Europe and spread around the world to Africa, Asia, and the Middle East.

Auschwitz is a monument to the barbaric inhumanity of the Nazi regime. It is the site where more than one million people were systematically tortured and killed in support of Adolf Hitler’s determination to eradicate entire populations that he viewed as racially impure.

George Washington, the first president of the United States, is much more than a monument on Mount Rushmore. Who was Washington, the general, president, and husband? He was first and foremost a man of impeccable honor which, despite military adversity and political wrangling, never abandoned him. The Founding Fathers who squabbled and competed among themselves did agree on one thing: Only Washington could lead the country, first in the country’s military fight for freedom and then as the man charged with transforming 13 individual states into a united country.

The most notorious man in history, Adolf Hitler, is best known for having perpetrated crimes against humanity over the six-year course of World War II. His brutal extermination policies are responsible for the deaths of close to 30 million people he considered inferior, and added to that, the military casualties suffered by all parties, yields a grand total of approximately 60 million people dead by the end of the war. That number equates to 3% of the world's population at the time. But, who was this man? What made him into the monster he became? Can his childhood explain the formation of such a brutal dictator?

Imagine a blackout lasting not days, but weeks or months. Tens of millions of people over several states are affected. For those without access to a generator, there is no running water, no sewage, no refrigeration or light. Food and medical supplies are dwindling. Devices we rely on have gone dark. Banks no longer function, looting is widespread, and law and order are being tested as never before.

When it comes to climate change, the media, politicians, and other prominent voices have declared that "the science is settled." In reality, the long game of telephone from research to reports to the popular media is corrupted by misunderstanding and misinformation. Core questions - about the way the climate is responding to our influence, and what the impacts will be - remain largely unanswered. The climate is changing, but the why and how aren't as clear as you've probably been led to believe.

For over a decade, philosopher and energy expert Alex Epstein has predicted that any negative impacts of fossil fuel use on our climate will be outweighed by the unique benefits of fossil fuels to human flourishing--including their unrivaled ability to provide low-cost, reliable energy to billions of people around the world, especially the world’s poorest people. And contrary to what we hear from media “experts” about today’s “renewable revolution” and “climate emergency,” reality has proven Epstein right.

For decades environmentalists have told us that using fossil fuels is a self-destructive addiction that will destroy our planet. Yet by every measure of human well-being, from life expectancy to clean water to climate safety, life has been getting better and better. How can this be? The explanation is that we usually hear only one side of the story. We're taught to think only of the negatives of fossil fuels, their risks and side effects, but not their positives.

At 01:23:40 on April 26th 1986, Alexander Akimov pressed the emergency shutdown button at Chernobyl's fourth nuclear reactor. It was an act that forced the permanent evacuation of a city, killed thousands, and crippled the Soviet Union. The event spawned decades of conflicting, exaggerated, and inaccurate stories.

Global demand for power is doubling every two decades, but electricity remains one of the most difficult forms of energy to supply and do so reliably. Today, some three billion people live in places where per-capita electricity use is less than what's used by an average American refrigerator. How we close the colossal gap between the electricity rich and the electricity poor will determine our success in addressing issues like women's rights, inequality, and climate change.

With temperatures rising and the risk of disasters growing, our world is increasingly vulnerable. Most people see disasters as freak, natural events that are unpredictable and unpreventable. But that simply isn’t the case - disasters are avoidable, but when they do strike, there are strategic ways to manage the fallout.

In Storms of My Grandchildren, James Hansen - the nation's leading scientist on climate issues - speaks out for the first time with the full truth about global warming: the planet is hurtling even more rapidly than previously acknowledged to a climatic point of no return. Although Hansen was Al Gore's science adviser for the 2006 documentary An Inconvenient Truth, his recent data shows that our situation is even more dire today.