A beautiful endangered bird was photographed for the first time ever, only to be killed later by researchers who hope to study it more.
When an animal takes a selfie, who owns the rights to it?
These places look alien, but they're actually on Earth.
Photographer Steve Axford captures amazing, sometimes eerie, views of mushrooms and other fungi.
This week: A special Earth Day planet pics looks at the world's largest desert, a massive iceberg on the move and a deep ocean dive where you can ride along.
NASA's Aqua satellite was in a unique position to capture spring's arrival on the East Coast.
Cherry blossoms bloom in South Korea, Cairo is captured at night by the space station and mysterious fairy circles come into focus.
Smartphone app is designed to encourage healthier lifestyles by altering photos based on target weight.
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