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What happened to antimatter?

Particles come in pairs, which is why there should be an equal amount of matter and antimatter in the universe. Yet, scientists have not been able to detect any in the visible universe. Where is this missing antimatter? CERN scientist Rolf Landua returns to the seconds after the Big Bang to explain the disparity that allows humans to exist today.

Spectacular Supermoon Seen From ISS

On Sunday, you will be able to view the biggest and brightest moon in 20 years. It will be the second and largest of the three to appear this summer. It will make the moon appear 14 percent closer and 30 percent brighter than usually.

Women’s Suffrage

john Green teaches you about women in the Progressive Era and, well, the progress they made. So the big deal is, of course, the right to vote women gained when the 19th amendment was passed and ratified. But women made a lot of other gains in the 30 years between 1890 and 1920. More women joined the workforce, they acquired lots of other legal rights related to property, and they also became key consumers in the industrial economy.

Women also continued to play a vital role in reform movements. Sadly, they got Prohibition enacted in the US, but they did a lot of good stuff, too. The field of social work emerged as women like Jane Addams created settlement houses to assist immigrants in their integration into the United States. Women also began to work to make birth control widely available. You’ll learn about famous reformers and activists like Alice Paul, Margaret Sanger, and Emma Goldman, among others.