Earth under threat

960 × 678

Smokestacks Emitting Smoke — Black

1280 × 800

Cracked Earth Globe

1600 × 968

Penguin and Chick in Alley

1024 × 768

Penguin in urban alley

1280 × 800

Earth crisis concept art

1280 × 1024

Penguin in Alley — Black

1200 × 827

Painting the Earth

1200 × 933

Green Leaf and Globe — Serene, Digital Art, Heart

1024 × 768

Earth on fire in hand

1432 × 1341

Industrial Factory at Sunset — Orange

1200 × 960

Cow and global warming

800 × 600