Timeline of Life on Earth

The video compresses Earth's 4.5 billion-year history into a 24-hour day. Life begins at 4 a.m. with single-celled organisms, evolving to multicellular life by 6:30 p.m. Sea plants and animals appear by 8:30 p.m., and land colonization occurs by 10 p.m. Dinosaurs dominate until 11:41 p.m., followed by mammals. Humans emerge in the final minute, with all recorded history fitting into a few seconds. The video is supported by Audible, offering a free audiobook.

How long ago did life on Earth begin according to the video?

• 2.5 billion years ago

• 5 billion years ago

• 3.8 billion years ago

• 4.5 billion years ago

At what time in the 24-hour timeline do eukaryotic cells first appear?

• 8:30 p.m.

• 6:30 p.m.

• 1:00 p.m.

• 4:00 a.m.

When do multicellular organisms start forming colonies?

• 8:30 p.m.

• 1:00 p.m.

• 6:30 p.m.

• 10:00 p.m.

What significant event occurs just before 10:00 p.m. in the timeline?

• First winged insects appear

• Emergence of land plants

• Appearance of sea plants

• Rise of dinosaurs

Which creatures dominate the land after a mass extinction event?

• Mammals

• Reptiles

• Insects

• Dinosaurs

At what time do dinosaurs vanish from the timeline?

• 10:24 p.m.

• 11:00 p.m.

• 11:41 p.m.

• 11:59 p.m.

When do humans first appear in the 24-hour timeline?

• With 30 seconds left

• With 1 minute and 17 seconds left

• With 2 minutes left

• With 5 minutes left

What is the main focus of the Audible promotion at the end of the video?

• A free e-book

• A free audiobook

• A free magazine subscription

• A free science video

Which book is recommended in the video for further reading?

• The Selfish Gene

• A Short History of Nearly Everything

• A Brief History of Time

• The Origin of Species

What is the main theme of the video?

• The evolution of life on Earth

• The future of Earth

• The impact of technology on evolution

• The history of human civilization