Mar 1, 2026 · Dinosaur, the common name given to a group of reptiles, often very large, that first appeared roughly 245 million years ago and thrived worldwide for nearly 180 million years. Most died …

Take this Science quiz at Encyclopaedia Britannica to test your knowledge of dinosaurs.

This Encyclopedia Britannica Animals list features 8 titanosaurs, some of the biggest dinosaurs and biggest land animals that ever lived.

5 days ago · Roblox is a free electronic gaming platform that lets people from around the world create, share, and play games.

Feb 20, 2026 · Stegosaurus, one of the various plated dinosaurs (Stegosauria) of the Late Jurassic Period (159 million to 144 million years ago) recognizable by its spiked tail and series of large …

Feb 10, 2026 · Grass, any of many low, green, nonwoody plants belonging to the grass family (Poaceae), the sedge family (Cyperaceae), and the rush family (Juncaceae). There are many …

Religion, human beings’ relation to that which they regard as holy, sacred, absolute, spiritual, divine, or worthy of especial reverence. Worship, moral conduct, right belief, and participation in religious …

Ankylosaurus, (genus Ankylosaurus), armoured ornithischian dinosaurs that lived 70 million to 66 million years ago in North America during the Late Cretaceous Period. Ankylosaurus is a genus belonging …

Jan 24, 2026 · Federalism, mode of political organization that unites separate states or other polities within an overarching political system in a way that allows each to maintain its own integrity. Learn …

Mar 17, 2026 · A chatbot is a computer program designed to have interactive or automated conversation with humans. Rudimentary chatbots were first developed in the mid-to-late 20th century and have …