The last time the Arctic was ice-free in summer, modern humans didn't exist.
File:Precession and seasons.svg - Wikimedia Commons
Dogs migrated with humans to the Americas 15,000 years ago | CNN
/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer/58/bd/58bd177d-ffea-45bb-90b4-c79169db4db8/horse_mand_black-wr_no_scale.jpg "Humans May Have Arrived in North America 10,000 Years Earlier Than We Thought | Science| Smithsonian Magazine")
Humans May Have Arrived in North America 10,000 Years Earlier Than We Thought | Science| Smithsonian Magazine
Climate change means days are getting longer, scientists find | Climate science | The Guardian
Island-building in Southeast Asia created Earth's northern ice sheets | Earth and Planetary Science
The Story of How Humans Came to the Americas Is Constantly Evolving | Science | Smithsonian Magazine
Amundsen Becomes First to Reach South Pole, December 14, 1911 - Scientific American
A new history of the North Pole uncovers its deep significance for modern civilization - ArcticToday
Humans Crossed the Bering Land Bridge to People the Americas. Here's What It Looked Like 18,000 Years Ago. | Live Science
salty aunty — Why are you guys so light-skinned? You live really...
The human conquest of the polar regions « World Ocean Review
The First Settlement Of The Americas (c. 15,000 Years Ago) - About History
On Way to New World, First Americans Made a 10,000-Year Pit Stop
Last Glacial Maximum - Wikipedia
Grisly find suggests humans inhabited Arctic 45,000 years ago | Science | AAAS
Scientists Have Unearthed Traces of an Ancient Rainforest in... Antarctica : ScienceAlert
Unknown viruses dating back 15,000 years found in Tibetan glacier - YouTube
Did the First Americans Arrive by Land or by Sea? - The Atlantic
The human conquest of the polar regions « World Ocean Review
Scientists discover 15,000-year-old viruses frozen in glacier ice - CNET
Humans adapted to Arctic life 10,000 years earlier than thought | New Scientist
This Animal Is Brought Back To Life By Scientists After Being Frozen For 24,000 Years At The North Pole
The changing pole star – Explaining Science
/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer/24/7a/247aa405-bb18-4eec-a00f-4617461b4c6f/raghavan4hr.jpg "The First People to Settle Across North America's Arctic Regions Were Isolated for 4,000 Years | Smart News| Smithsonian Magazine")
The First People to Settle Across North America's Arctic Regions Were Isolated for 4,000 Years | Smart News| Smithsonian Magazine
The changing pole star – Explaining Science
Archaeological sites in North America; 38,000 - 15,000 BC - YouTube
Elk began to enter North America about 15,000 years ago, likely due to more suitable environmental conditions caused by the end of the last ice age. During the Pleistocene, they were much
