African savanna elephants are the biggest elephant species ... is also making elephants' remaining environment less safe. As Earth warms, their home turf becomes more likely to face water ...

They include some of the largest animals on Earth. The blue whale is the biggest animal that has ever existed. Whales can be ...

Not only were they large and in charge on all seven continents, they held their own amid the newly evolved duck-billed and horned dinosaurs, until an asteroid struck Earth and ended the age of ...