Earth Matters

There's a great story behind this cute face

Drink in the hue of a Texas bluebonnet bloom

Titan is covered in sticky, 'electric' sand

Auroras are lighting up the sky this week

Rare California frogs of Mark Twain fame may be making a comeback

World's largest dinosaur footprint shows just how enormous these beasts were

Tasmanian tiger 'sightings' prompt new scientific hunt

Rare Florida panther kittens spotted outside known breeding range

In baby otter's first try, water is no fun

12 amazing images of Jupiter

Take a flight through the aurora australis

650-year-old Polish oak is Tree of the Year