Using high resolution satellite imagery, explorer Sarah Parcak reveals lost cities and ruins hidden underground—take a look.
An oil tanker is in danger of exploding after colliding with a freight vessel off the coast of China.
Ninety-nine percent of one of the largest green sea turtle populations is female—likely because of climate change.
LIVE in the wild with 100,000s of king penguins on the sub Antarctic island of South Georgia with wildlife cameraman Bertie Gregory! Ask questions in the comments below!