Mariana Trench contains 'extraordinary' levels of toxic pollution
February 15, 2017, 11:38 a.m. by Michael d'Estries
New study erases assumptions that the ocean's deepest points are pristine ecosystems.
Lost continent discovered under the African island of Mauritius
January 31, 2017, 4:22 p.m. by Bryan Nelson
The only known home of the now-extinct dodo bird has been concealing an ancient continent.
2016 was the Arctic's warmest year on record 'by far'
December 22, 2016, 1:07 p.m. by Russell McLendon
The heat may lead to record-low sea ice in 2017, scientists warn, which could let the Arctic warm up even more.
Killer whales vs. shark: Drone footage shows rare attack
December 18, 2016, 2:52 p.m. by Bryan Nelson
Video settles who is truly atop the ocean food chain.
The Earth's mountains, rocks and water bodies are ancient. Do you know how old they are?
December 16, 2016, 12:43 p.m. by Angela Nelson
The Earth's mountains, rivers, animals and rocks have been around for millions or billions of years. Do you know which ones have been around the longest?