Jun 11, 2025 · Columbine High School shootings, mass shooting that occurred on April 20, 1999, at Columbine High School in Littleton, Colorado, leaving 14 dead, not including the two …

5 days ago · Uncover something interesting: Guess the topic using the fewest Reveals and Hints. Topics include People, Science & Tech, History & Society, and more.

Erosion is related to weathering, which is a natural process that slowly breaks apart or changes rock.Once the rock is affected by weathering, the process of erosion causes bits of rock and …

Britannica’s new platform provides content designed and written specifically for early learners. Creating a more engaging and fun learning experience for students, the activities in Britannica …

4 days ago · Rocky Mountains, mountain range forming the cordilleran backbone of the great upland system that dominates the western North American continent. Generally, the ranges …

Apr 3, 2015 · The United States contains a highly diverse population.Unlike a country such as China that largely incorporated Indigenous peoples, the United States has a diversity that to a …

Jun 11, 2025 · Plymouth, town (township), Plymouth county, southeastern Massachusetts, U.S.It lies on Plymouth Bay, 37 miles (60 km) southeast of Boston.It was the site of the first …

Jun 2, 2025 · In August 1947 the Indian Independence Movement culminated in the end of British rule over the Indian subcontinent.However, the ecstasy of freedom was attended by the agony …

May 10, 2025 · Brown v. Board of Education, case in which, on May 17, 1954, the U.S. Supreme Court ruled unanimously (9–0) that racial segregation in public schools violated the Fourteenth …

Click on a group to learn about the different types of animals that are related to each other. To find out more about how scientists place animals in groups, read the article called biological …